Star Trek Online Duty Officers Development Guide
Star Trek Online Duty Officers Development Guide by Hevach
One of the really cool things about STO is that you don’t just get a character to develop, but an entire crew to develop. Duty officers are one of the most extensive and daunting aspects of that crew development, so I’m here to ease you into the whole mess.
What Are Duty Officers?
So you just hit Lieutenant Commander 2, and now you’re getting your first crop of duty officers and are getting alerted to all kinds of assignments. What’s this all about?
Where bridge officers (boffs) are your senior staff, duty officers (doffs) are your “rank and file” crew. They man minor stations through the Active Roster, and take on minor missions through the assignment system.
They’re also the driving force behind the commendation system, which is half loot pinata, half collectible card game, and half multi-branched alternative progression system.
Doffs themselves are effectively an item stored in a special inventory, much like bridge officer candidates. Doffs cannot be customized, renamed, etc, and aren’t represented by a character in the game world.
Doffs have several aspects:
Branch and Department
Doffs are divided into the three main branches of service: Tactical, Engineering, and Science, but also into more specific departments. Tactical doffs can be tactical or security, Engineering doffs can be engineering or operations, and Science doffs can be science or medical.
There are also civilian doffs, which include everything from diplomats to bartenders to colonists.
The main title under their name, like Quartermaster or Tractor Beam Officer. This is their contribution in the Active Roster. What exactly they do is described below their title. For example, a Quartermaster (an Operations specialty) reduces recharge time for the Combat Supply power, and an Astrometrics Scientist (a Science specialty) reduces your transwarp cooldown.
Some specializations exist that cannot be used in the active roster, but instead relate solely to the assignment system.
Much like boffs, doffs have traits. These are represented in a line of icons, and includde things like Telepathic, Honorable, Peaceful, or Unscrupulous. Some traits may sound like they have positive or negative connotations (like Honorable and Unscrupulous), but depending on the assignments they’re sent on, any trait can be positive or negative. More on that.
Note that, unlike boffs, doff traits don’t generally play a part when they’re slotted in the active roster. They play a role in matching the best doffs to carry out assignments.
Rarity and Quality
Unlike other items, Rarity and Quality aren’t strictly linked. Purple doffs are better as well as much rarer than white, but not all doffs of equal quality have the same rarity. KDF Klingons and Federation humans are common, most main allied races are uncommon, and outside races (like Federation Klingons) are rare. Generally, rarity only matters if you want a specific race of doff, especially if you want a ship full of just that race. Quality is the actual gameplay measure of a doff.
Ultra Rare duty officers exist in some specializations. These are purple quality doffs, but much rarer than normal purples. These have alternate roster powers – not inherently superior, just different. For example, a normal Energy Weapons Officer gives a chance to lower cooldowns on target subsystem powers, but Muaza Amman’sor, an Ultra Rare Xindi-Aquatic, gives your beam weapons a tiny chance to remove buffs from targets.
There are several routes for obtaining doffs. The primary ones:
Leveling: You get 12 doffs to start you out at level 6, and four packs of three as you level. This isn’t a lot, but they’re still a starting point.
Recruitment Assignments: Found primarily at the Academies, but also around the home systems. These come in the basic form, which gives several completely random doffs, as well as specialized versions for both department (also at home systems) and race (rare in sector space), which give fewer doffs but also have a critical success chance to give better doffs.
Colonist pickups reward 5 colonists, and a number of assignments have a small chance to reward prisoners.
The C-Store: C-store packs are better than standard recruitment in general. They give guaranteed quality levels – one blue, two green, one white minimum. Every doff in the pack can potentially be higher than its guaranteed quality – in theory a 6 purple doff pack is possible, but one in a million is being optimistic.
There are also several ways to augment your roster, by grind or luck. These often have different or even extra traits compared to random doffs obtained by above means.
Commendation Rewards: Every commendation tier you complete unlocks a set of duty officers from a vendor at your academy. Tier 1 and 2 unlock green duty officers, tier 3 blue, and tier 4 purple. You get one free pick from each level, and can spend Dilithium to get more (1000 for green, 5000 for blue, 12000 for purple).
Colonial Renown: There are special unlocking chains of assignments in exploration sectors involving establishing and growing a colony. Each sector’s colony will, when complete, reward a unique doff of an unusual species – these include Deferi, “free” Jem’haddar, and others.
STFs: You can get special Liberated Borg duty officers for encrypted data chips. 20 for blue, 40 for purple.
Defectors: Both factions have access to assignments that can reward defectors of the opposite faction. These are similar but separate from commendation reward cross faction doffs.
Rare assignments: There is one special assignment called Investigate Temporal Anomaly. It can appear almost anywhere, and once you’ve completed it successfully you won’t see it again. The reward is a purple El-Aurian bartender, your own personal Guinan.
Events: There has been one Junior Officer Appreciation event to date. Similar to Q weekends, this is a weekend event where CXP rewards are increased. The first of these gave a special exocomp with an alternate roster power.
Lastly, doffs can also be traded on the exchange, by direct trade, mail, etc. Many special doffs are bind on acquire, and most others bind when used in the active roster. They don’t bind when used on assignments, however.
The Doff Window
The Doff window is accessed by the second button below the minimap, next to the C-store. The entire system, active, reserve, and assignments, is contained in this window.
First, the Ship Duty tab. Under this you’ll see three headings. Space and Ground are your Active Roster, where you slot doffs to get their benefits. At the bottom you can see how many positions you have. This is 5 when you first gain access to the system, but increases with level. You can slot all engineering or all tactical if you want, or you can mix and match any way you want.
The Roster section here shows all your current doffs, sorted by department. Here you can see all the details of each doff, and their current status. On Assignment means they’re out on a mission, On Reserve means they’re available to be sent, and Currently Assigned means they’re on the Active Roster.
There are also special tabs called Passengers and Brig. This is where colonists and prisoners are stored (up to 20 each), so they don’t limit your officer compliment.
This tab shows available assignments, divided into Sector and Shipboard. Sector assignments are avaialble in all sector blocks, as well as some social zones like Starfleet Academy and Earth Spacedock.
Some shipboard assignments are slightly different than sector assignments. Many of them give temproary buffs – for example, doing a diagnostic assignment will reward you a small temporary buff to the system in question (these buffs appear in the reward list using the same icon as 1 hour skill boosts). Others include tribble gene splicing (letting you bypass rare food requirements for higher tier tribble breeds), “crafting” assignments that let you make level-appropriate even mark equipment (the outcome level determining the color quality of the item) and also two Reassignment missions, which can be used to dispose of unwanted or duplicate doffs in exchange for refined dilithium.
In Progress shows any assignments you currently have out, and the time remaining. Whent he time runs out, there’s a brief “Completing” delay, after which the officers return to the reserve roster and the assignment moves to the Completed category. In the Completed category, you can close assignments and claim their rewards.
In the event of failure or disaster, sometimes duty officers end up in sickbay. Very high risk assignments may even retain this risk on success. Duty officers in sickbay can’t be used for anything until they get out. White quality doffs can potentially die on certain assignments, but green and higher are protected.
Request Duty Officers
This page allows you to open cadres you’ve gotten by recruitment or the C-store, as well as buy C-store doffs. It also shows a list of recently acquired doffs.
Here, you can enable Department Head Recommendations, and assign bridge officers to department head positions, as well as First Officer. Any boff can be first officer, Tactical and Security take a tactical boff, Engineering and Operations take an engineer, and Science and Medical take a science officer.
Currently, these assignments have no gameplay significance. When you start an assignment, the appropriate department head will offer recommendations on which duty officers are best for the job. These recommendations are conservative – they’re based on what doffs will give the best Success rate. However, you may not want to go that route all the time. More on that below.
Assignments are the minor missions you can send duty officers from your reserve list on. Your captain and bridge officers don’t take part in assignments, and once you send your guys out you don’t have any more influence on wether they succeed or not.
Assignments fall into several Commendation Categories:
Diplomacy (Federation only)
Marauding (KDF only)
The lines between categories aren’t always clear cut. Exploration often has a scientific aspect, Colonial may require defending a colony from attack, and Military may require obtaining supplies rather than combat.
Each Commendation Category has its own experience type, and levels up independently, with four tiers of rewards as you go. Rewards include Titles, Accolades, unique duty officers, other-faction bridge officers (through Diplomacy and Marauding), and access special assignments.
Commendation categories take 100,000 experience to max out, which is a lot.
Assignments have rarity/quality levels just like items in the game, indicated by color from white to purple. Rarer assignments give significantly higher rewards, to the point that in some cases a 15 minute rare assignment gives more commendation experience than a 2 day common one.
Risk is a simple scale of how much danger your officers are in on the assignment. This ranges from None, meaning there’s no chance of injury or death, to Exreme, meaning expect most of the team in sickbay, even on a success.
Where to find Assignments
Every four hours, the available assignments in every location change. You can find them in every sector, including enemy territory, as well as on board your ship in the form of routine maintenance, training excercises, or even sessions with the ship’s councilor. Some, but not all, social maps also include assignments, including but not limited to Earth Spacedock, Sol System, Starfleet Academy, Wolf 359, and the Romulus system. In any location where there’s more than one of the same map (as is common in Earth Spacedock), each instance will have its own set.
In the future, standard missions may include assignments you can access while in the mission map, so your duty officers will attempt side goals while you take care of the real problem.
Clicking on an assignment in the list brings up a page showing several things.
At the top, there’s the title and description of the assignment, followed by the time to complete it (ranging from minutes to weeks), and its reward, including items, commendation exp, and currencies.
Below that is the base success rate. There are four outcomes of an assignment. Failure and Success are self explanatory, but there’s also Disaster and Critical Success. Critical Success may return better or more rewards, where Disaster can land your officer in sickbay for some time (they’ll be locked in the reserve roster and can’t be used for a while). White quality duty officers may even get themselves killed on a Disaster.
There are ways to improve your chances, though, and that’s what the last section of the assignment’s page covers.
At the bottom you’ll see a list of requirements. Each box will have the type of duty officer (it may be as general as any doff of the right branch, or as specific as a specific specialty), and will have several lists of traits or specialties. For example:
Critical Success: Seductive, Telepathic, Projectile Weapons Officer
Success: Seductive, Telepathic
Failure: Honorable, Peaceful
Disaster: Aggressive, Honorable, Unruly
This box can be filled by any tactical officer, but has a better critical success chance with a projectile officer. In addition, matching traits in the list will alter the chances of success. Put a Klingon in there who has Aggressive and Honorable, and your failure and disaster rates will both go up. However, put a female Orion in there and her seductive trait will boost your success rate.
Note that its not always boosting success or lowering failure. The rule of thumb is always Green=good, Red=Bad. A red trait under Success will lower your chance of success, and a green trait under Failure will lower your chance of failure. This also isn’t just limited to traits, but includes department and specialization – an Any Officer slot may give improved success if it’s filled by a medical officer, for example.
It’s a fairly simple matching game, but it’s worth paying attention. You have no more influence once you dispatch officers on an assignment, so this is your one chance to match the right officer to the right job.
There’s also one more section below the officer slots. This is also part of the requirements, any items you need to send with your doffs. Most of the time these are commodities that you can replicate, but it can also include energy credits or contraband, a special commodity collected through certain assignments.
To the right, your available roster is displayed. If Department Head Recommendations are turned on, the appropriate department head will offer you a list of the best officers for the job, or you can bring up the full list if you want to save better doffs for another assignment.
What’s this Red box?
Sometimes you’ll see a red triangle on an assignment. this means for some reason you can’t do it. Hover your mouse on the triangle to see why.
Often, it’s because you don’t have the right doffs – it may require a specific specialization you don’t have available, for example. Other times, some commodity is required that you can simply replicate or buy from a freighter. Sometimes, though, you’re simply not a high enough level.
It can also be because of Assignment Points. These are how many assignments you can have active simultaneously. You can have 20 assignments out at a time.
Most assignments have four possible outcomes, from best to worst: Critical Success, Success, Failure, and Disaster.
In most cases, critical success gives better rewards than a normal success. Depending on the assignment, disaster can land doffs in sickbay and possibly kill a white quality doff, but not always.
Some assignments, most notably Bridge Officer Recruitment, failure and disaster are still a “success,” but with reduced reward. For example, a bridge officer recruitment mission (commonly seen on Earth Spacedock) will give a purple doff on a critical success, a blue on a success, a green on failure, and a white on disaster. No worries about losing your doffs on them. These missions usually have a very high base failure/disaster rate, which can scare people off from doing them.
There are two ways to improve your outcome odds. The first and most obvious is matching the traits as you can. This is cumulative, so if an assignment benefits from telepathic, logical, and unscrupulous (a common set in trade deals), a Vulcan will hit two (logical, telepathic), but a Ferengi will only hit one (unscrupulous). This is also cumulative across multiple doffs, matching all 5 in a large assignment will have a significant effect.
The second way, less obvious but easier, is simply to use higher quality doffs. Can’t match any traits? Switching from a white doff to a green one is almost as good. This can make blue and purple doffs your go-to guys. For example, the purple El-Aurian bartender (rewarded from Investigate Temporal Anomaly) doesn’t meet the requirements from many assignments, but can still perform comparably to a carefully matched white doff.
Higher quality doffs also increase the assignment’s Quality rating. 5% for a green doff, 10% for blue, and 20% for purple. This rating is cumulative across multiple doffs, so five purples on a big assignment will crank up a 100% quality modifier. All experience rewards (CXP and skill points) are multiplied by this value at the end of the assignment.
In addition, assignments have a Critical rating. This is how much your experience rewards are increased on a critical success, and is generally higher on rarer or more difficult assignments. For example, take a blue military assignment that normally awards 250 CXP. That’s already a nice chunk, but it has 5 doff slots and a critical rating of 150%. 5 purple doffs will give you a 100% quality rating, for 500 CXP base, and a critical will give you another 150% for 1250 CXP, six times the original base.
Commendation Leveling Strategy
There’s a lot of development to make in the system, and it’s perfectly ok to just do assignments and let the levels come. However, there are ways you can get a system going.
These are by no means the only way to go, but I’ve found it successful.
Recruit Recruit Recruit
Recruitment hotspots are Starfleet Academy for Federation and Klingon Academy for KDF. These locations will usually have recruitment assignments available, some taking 1 day and giving white/green doffs that cannot fail, and one taking 3 days and giving a blue or purple doff of a specific department, with a small failure chance but also a critical success chance.
Hit them as often as you can when a new batch of assignments come up. There you’ll be able to pick up assignments that will give you some random doffs, without needing any inputs.
This is the most important part of getting rolling in the doff system. Your initial batch of recruits won’t be large or diverse enough to start hitting more than a few assignments here and there, and it won’t give you many active roster options.
Even after you fill up your 100, it’s worth it to keep pushing recruitment. You can reassign away white and later green doffs while trying to improve your selection of blues and purples.
Recruitment is slow going. A good strategy if you have the character slots is to create an alt, get him to level 6 to unlock the doff system, and pick up any recruitment you can on him, particularly colonist pickups. Any good doffs you collect can be mailed to your main, and any others can be dismissed for dilithium, which you could then put on the exchange, either to withdraw it on your main or to sell for C-points which can be used to buy doff packs or roster expansion.
Prisoners and Refugees
These are some coveted doffs. KIingons will likely find themselves swimming in prisoners, but Feds won’t be so lucky. Either way, these doffs can be used for various special assignments (Debrief Prisoner, Treat Refugees for Trauma), but the real interest is trading them.
Negotiate Prisoner Exchange, generally found in enemy sectors, will let you trade a prisoner for a random doff.
Asylum assignments let you hand a refugee into protective custody in exchange for a random high quality doff.
Refugees can show up in random packs, and also come from various sources, most notably Support Colonization Efforts. Prisoners come from critical successes on many military, espionage, and marauding assignments, and KDF players can buy them from Orion slavers or get them from Support Efforts after finishing colonial chains.
Critical Success is the Best Success
Your department heads will give recommendations based on Success only, ignoring critical success. The ideal way to plan assignments, however, is to maximize critical success. This still reduces your failure chance the same as if you planned for success, but also increases the chance to get a critical success, and criticals are the way to really generate CXP.
For example, take a military campaign assignment giving 250 CXP, with 5 doff slots and a 150% critical rating. Packing 5 purples on this will already bring you up to 500 CXP, but a crit will raise that to 1250 – a respectable chunk of the 100,000 you need for tier 4.
Diplomacy has a number of high payout longer assignments. Entertaining Dignitaries, Religious Symposiums, and the like are fairly demanding – requiring a number of civilian specializations and a lump of EC funds. However, many give quite high rewards to start with, and many have 5 doff slots, making this one of the easier categories to raise.
Marauding is a very diverse category, but also very high risk. It’s best to wait until you can avoid using white doffs in risky assignments. Many inter house political assignments can be churned through to generate a steady stream of CXP, but your big payouts come from high risk assignments with 5 doff slots. Like Diplomacy, Marauding tends to have elevated payoffs, and you’ll need tier 3 to access the Sirius sector block.
Science is easy, but a grind. Most assignments involve collecting data samples. These are under an hour, and generally take two doffs, making them easy grind fodder.
The bulk of engineering is short shipboard assignments, mostly diagnostics. Cheap grindables, basically. Assignments to watch out for are any civil engineering assignments in sector space – building communication systems, fitting seismic stabilizers or weather control systems, etc. These are high payout, but will require large amounts of multiple commodities. Many colonial chain assignments also give engineering CXP, often in pretty respectable amounts. These are big investment assignments requiring commodities, but will yield your best payouts. Engineering also pairs with Espionage to create weapon satellites from stolen plans. Commodity heavy, uses just about everything at some point.
Every one of your doffs in sickbay will give you some medical CXP, but in the long run it’s not really enough to matter. Key assignments here are Medial Relief (high payout blue), Research Therapies (unusually high payout for a single-doff assignment) and the various vaccination assignments. There are also quickie shipboard assignments including some minor treatment and medical research, and higher payout Contain an Outbreak assignments with more doff slots. Very commodity heavy path, you’ll need tons of Medical Supplies and plenty of Antigens.
Lots of high risk assignments. Wait until you can avoid white doffs here if you can. Lots of big payouts here – resply, reinforce, and military campaigns all have many doff slots to crank up your Quality level, high risk, but high payouts. Before you have the greens to get going with real assignments, security briefings at your home system can give a reasonable payout for no risk or investment. For Federation, military criticals are particularly important, as they’re your main source of prisoners. Commodity intensive: Have tons of provisions, medical supplies, and plenty of shield generators.
Again with the high risk. Have enough green or better doffs before you get going here. There are many assignments like tracking fleet movements that take several doffs that make for good payouts if you can pack them with blues and purples. Particular interest are the Secure Prototype assignments. These give schematics to build weapon satellites, and you need to do them once each to unlock their respective shipboard construction assignments under Engineering. Instigate Defection assignments are also very attractive, since you can get cross faction defector doffs this way, many very good blue and purple doffs in this pool.
Any time you see a pickup, get it. You can have 4 pickups worth of colonists in your passenger section at a time – if you’re full and see a pickup, mail yourself the colonists and get it anyway. Do not do common drop offs. Instead, all your other colonial work should be in exploration clusters. Look for yellow text – each sector has a chain of unlocking assignments involving starting and expanding a colony. CXP is not your only reward here, but Colonial Renowns. Finishing a cluster’s chain will reward you a unique doff, many of which are unusual species, including everything from Deferi to Jem’haddar. Commodity medium, you’ll need all kinds of stuff, from astrometric probes to seismic stabilizers. Usually not big lots at a time, so you can get away with replicating them in a pinch.
As you do these chains, you’ll also unlock a plethora of miscellaneous assignments in those sectors. These are interesting because nearly all of them give split CXP, hitting many other categories.
Prepare to go broke, but an easy grind. Avoid dealing with latinum purchases unless you love dabo (you can buy for latinum, but not sell for latinum). Key assignment here is trade route negotiations, but most of your work is going to be in 30 minute grindables to buy and sell with EC. You’ll need tons of every commodity here, but the cheaper ones deal in bigger lots – provisions and medical supplies up to 60 at a time – so have TONS of those on hand. Your safest bet is actually to stick to buy assignments – it’ll go a long way towards funding the commodity hungry categories. Trade is low risk, but stick to your best quality doffs whenever possible – failures here will become expensive fast.
Most exploration deals with alien technology, and mirrors the Science branch with tons of fast grindables. Alien Shield Tech assignments are very good to hit, as they give the Personal Mobility Shield, a standard ground shield that resists roots and holds and such. Ruin sites and other excavations also give high payouts. Your real source of CXP here, though, isn’t the doff system, but the Tour the Universe event. Each sector block you finish gives a bit of Exploration CXP, and if you finish the whole thing you’ll get a bonus that includes other categories, but primarily goes to Exploration. Max out Driver Coils and get the Borg engine and 3-4 laps isn’t out of the question.
Your main center for these is teaching jobs at your respective Academy. Sector space and many social maps will have various vacation options, ranging from mediation at P’jem to some good old fashioned Jamharon on Risa. Shore leave assignments are good for big payouts, fill all 5 slots with high quality doffs with critical traits and watch the 1000’s roll in.
Your most important category, but also the hardest to rank up. Recruitment centers around the home systems, but the bigger payouts are on bridge officer recruitment and cultural exchange, which appear out in sector space. These are all long assignments with lockout timers and many have high rarity. You also get a small amount every time you dismiss a doff from your roster… which is about the only way to actively grind Recruitment due to the cooldowns involved. If you have a billion or two EC burning holes in your pocket, cheap white doffs might work for you.
A special channel, DOFFJOBS, has been set up to help collaboratively track rare and profitable assignments. Just /join doffjobs and listen in. Just like the Red Alert channel, the more people contribute the more reliable it becomes.
Colonial Renown Chains
One of the coolest things in the entire system is the Colony system. Most assignments are simple one-off work orders, but in each exploration sector (Including opposing faction sectors if you have tier 3 Diplomacy/Marauding), you have assignment series allowing you to build up and support a new colony.
These involve chain assignments and numerous side missions.
Note: B’tran and Azlesa each have two different leveled zones. Both versions have the same renown reward, but they progress separately.
Recognizing Chain Missions
Simple: Look for yellow text indicating that the assignment will open up new assignments in that sector.
Don’t even worry if you can’t get good doff matches – the chain advances regardless if you fail or succeed. If you see a chain assignment, it’s worth throwing whatever doff is available into it.
Just like all assignments, these steps aren’t always available. To make matters a bit stickier, you have to both be on the correct step of the chain AND visit when the assignment is available. This can make these chains fairly frustrating, as such it’s recommended not to focus on a specific sector, but tour all of them periodically and progress as many chains as you can at once.
1. Colony Site Survey
1 Science, 2 Science/Medical, 2 Astrometrics Probes
2. Establish Forward Base
3 Colonists, 20 Provisions, 2 Stem Bolts, 2 Communication Arrays
3. Establish First-In Colony
4 Colonists, 50 Provisions, 3 Stem Bolts, 3 Industrial Energy Cells
4. Fortify Colonies
1 Technician, 1 Engineering, 1 Armory Officer, 1 Security Officer, 1 Any Officer, 10 Shield Generators
5. Transport Settlers
5 Colonists, 20 Provisions, 5 Medical Supplies, 2 Warp Coils
6. Establish a Military Base
1 Tactical, 1 Engineer, 2 Any Officer, 20 Shield Generators, 15 Provisions, 3 Stem Bolts
No requirements, cannot fail. Gives a unique Blue duty officer.
This is your first unique reward. After this, the last step is a special repeatable, the real goal here.
8. Support Colonization/Expansion Efforts
This assignment is different for Federation and KDF. KDF rewards prisoners, Federation rewards Refugees. A critical on this assignment rewards a purple counterpart to the Renown doff.
Support Efforts is repeatable – you can do it as many times as you can find it, and even get duplicates of the doff.
Total Costs to unlock Support Efforts (not counting the military base which is unlocked in the same step as support efforts) is:
30 Shield Generators
8 Self Sealing Stem Bolts
5 Medical Supplies
3 Industrial Energy Cells
2 Warp Coils
2 Communication Arrays
2 Astrometric Probes
1 Partridge in a Pear Tree
Yes, that is a lot of stuff. Multiply this by 14 exploration sectors (not counting the duplicate chains in B’tran and Azlesa) and you’ve got 168 colonists – 34 pickups worth.
Most steps in the chain, aside from the Renown itself, unlock repeatable versions of themselves to start extra colonies. These don’t progress the chain, but many of them are better CXP than generic colonist drop offs. Be sure to conserve your colonists, though. You’ll need a ton of them if you want to get all the renowns.
More usefully, as you build a colony, you’ll unlock many assignments related to the colony: Various supply assignments to deliver commodities, exploration and scientific assignments, negotiations with native species or competing colonies, and so on.
None of these help the chain (even if you get an assignment saying contact with the colony is lost and you have to reestablish communications, the chain will continue normally if you never bother to help), but many are still notable because they give CXP in both colonial and a second category. They aren’t high yield assignments, so if you want to grind out Trade you don’t want to spend your time dropping off provisions at your colonies. But if you want to grind out Colonial, these are a decent way since you’ll get a lot of overflow in other categories in the process, and they aren’t limited by colonist pickups like the higher yield colonial assignments.
If you just want the colonial renowns, ignore everything that doesn’t have yellow text until you unlock Support Efforts. Your colonies will beg you for all sorts of help, but they’ll manage just as well on their own if you choose not to care.
The KDF also has chain assignments involving developing, testing, and using weaponized versions of various diseases. These are nice sources of Medical CXP, but the chains don’t appear to have any special rewards.