Casualties: Unknown features a total of 40 achievements, which can be unlocked through various methods such as story progression, survival challenges, and hidden objectives. Many achievements are directly associated with specific endings, while others require you to perform certain actions or reach particular milestones during your runs.
In this guide, you’ll find comprehensive details on unlocking all 40 Casualties: Unknown achievements, complete with solutions for those elusive secret trophies that might leave you scratching your head.
Note: This guide contains spoilers pertaining to the story and endings.
Casualties: Unknown Progression Achievements These achievements are linked to completing missions, reaching specific layers, and unlocking various endings.
These achievements are tied to completing missions, reaching specific layers, and unlocking different endings.
1. Company’s Best Description: Complete the mission. Finish the game with the chip and reach the Bio-pod ending to earn this achievement.
Description: Complete the mission.
Complete the game with the chip and reach the Bio-pod ending to unlock this achievement.
2. Millions to One Description: Obtain the cargo. Reach Layer 10 and complete your objective to successfully obtain the cargo.
Description: Obtain the cargo.
Reach Layer 10 and complete the objective to obtain the cargo.
3. Consolation Prize
3. Consolation Prize
Description: Over halfway there.
Progress to either Layer 5 or Layer 6; achieving either should unlock this achievement.
Reach Layer 5 or Layer 6. I forgot the exact layer requirement, but progressing past the halfway point should unlock it.
4. Cannon Fodder Description: Finish a run as an Experiment. Complete any run while playing as an Experiment to unlock this achievement. It also unlocks the Milky character.
Description: Finish a run as an Experiment.
5. The Marksman
Description: Finish a run as a Milky.
Finish the game as Milky to unlock this achievement, regardless of the ending reached. This also gives you access to Dune.
Unlocking this achievement also unlocks the Milky character.
5. The Marksman
Description: Finish a run as a Milky.
Complete a run as Milky. You can reach any ending to earn the achievement.
Unlocking it also gives you access to Dune.
6. The Cannibal Description: Finish a run as a Dune. Complete a run as Dune, with any ending counting for this achievement.
Description: Finish a run as a Dune.
Complete a run while playing as Dune. Any ending will count.
7. Company’s Worst Description: Get your freedom. To unlock this achievement, you must achieve the Escape ending by following these steps: Start an unchipped run. Bring a gun with you to the lab. After conversing with the scientist, kill them. Escape from the lab.
Description: Get your freedom.
You need to reach the Escape ending.
Follow these steps:
- Start an unchipped run.
- Bring a gun with you to the lab.
- After the scientist finishes talking, kill them.
- Escape from the lab.
This will trigger the Escape ending and unlock the achievement.
8. To Be Continued… Description: Fail the mission. Catastrophically. To earn this achievement, complete either the Bio-pod or Escape ending first, then proceed with the following conditions: Start a chipped run. Bring a weapon to the lab. Craft the M.E.R.C. scarf and take it to the surface.
Description: Fail the mission. Catastrophically.
Unlock the Mercenary ending to earn this achievement.
Requirements:
- Complete either the Bio-pod or Escape ending at least once.
- Start a chipped run.
- Bring a gun to the lab.
- Craft the M.E.R.C. scarf and carry it to the surface.
How to craft the M.E.R.C. scarf
After leaving the life-pod, find a Tech-Ball, break it to obtain the Nano-tech scanner, and ensure you keep it in your inventory as it helps locate the six required chips:
| Layer | Required Chip |
|---|---|
| Layer 2 | REL-Hyper-Regeneration Booster chip |
| Layer 3 | Micro-SINGLEBTR 1CHRG capacitor |
| Layer 4 | 0.2.9-Mind-Swap chip |
| Layer 5 | 0.0.7-Emergency Rejuvenation chip |
| Layer 7 | MINI-AI chip |
| Layer 9 | Kinetic Transmitter chip |
Once you have collected all six chips, craft the M.E.R.C. scarf using:
- 1 Scarf
- 1 Circuit board
- All 6 required chips
The crafting will require 18 INT. After crafting it, ensure you keep the M.E.R.C. scarf in your inventory and reach the surface to unlock the Mercenary ending and this achievement.
First, leave the life-pod and head down to find a Tech-Ball. Break it to obtain the Nano-tech scanner.
Pick up the scanner before leaving Layer 1 and keep it in your inventory throughout the run. It will help you locate the six required chips.
Collect these chips from the following layers:
| Layer | Required Chip |
|---|---|
| Layer 2 | REL-Hyper-Regeneration Booster chip |
| Layer 3 | Micro-SINGLEBTR 1CHRG capacitor |
| Layer 4 | 0.2.9-Mind-Swap chip |
| Layer 5 | 0.0.7-Emergency Rejuvenation chip |
| Layer 7 | MINI-AI chip |
| Layer 9 | Kinetic Transmitter chip |
Once you have all six chips, craft the M.E.R.C. scarf using:
- 1 Scarf
- 1 Circuit board
- All 6 required chips
The recipe requires 18 INT.
After crafting it, keep the M.E.R.C. scarf in your inventory and reach the surface. This will unlock the Mercenary ending and the achievement.
Casualties: Unknown Challenge Achievements These achievements focus on specific survival conditions, combat victories, skill levels, or completing challenging tasks.
These achievements require specific survival conditions, combat victories, skill levels, or other difficult tasks.
9. TOP OF THE FOOD CHAIN Description: Become the apex predator. Defeat the Elder Thornback boss in the Overgrown Depths, using two Dynamites for an easy takedown.
Description: Become the apex predator.
Kill the Elder Thornback boss in the Overgrown Depths.
10. Survival Veteran
Description: Reach level 16 in each skill.
Level every skill up to Level 16. An Endless run can be a great method since it offers more time to enhance your skills.
10. Survival Veteran
Description: Reach level 16 in each skill.
Raise every skill to Level 16.
An Endless run may be a good way to work toward this achievement since it gives you more time to improve your skills.
11. Not a Care in the World Description: Reach max. happiness. Raise your happiness to its maximum level, preferably by finding a Mini-barrel containing Fentanyl and consuming it.
Description: Reach max. happiness.
Increase your happiness until it reaches the maximum level.
12. Leukocyte Overflow
Description: Have 200% immunity.
Boost your immunity to 200% by looking for a Mini-barrel containing Antibiotics and consuming them.
12. Leukocyte Overflow
Description: Have 200% immunity.
Increase your immunity to 200%.
Look for a Mini-barrel containing Antibiotics and consume them to raise your immunity.
13. In and Out Description: Beat the game in under 3 hours (in-game time). Finish the game before the in-game timer hits three hours. Use Drill Pods to bypass certain layers and save time.
Description: Beat the game in under 3 hours (In-game time).
Finish the game before the in-game timer reaches three hours.
14. Lightfooted
Description: Complete a layer without ragdolling from a fall once.
Successfully finish an entire layer without ragdolling due to fall damage. Layer 1 is ideal for this; just avoid jumping or falling from great heights.
14. Lightfooted
Description: Complete a layer without ragdolling from a fall once.
15. Heavy Metal
Description: Smelt a titanium slab.
Craft a Titanium Slab using materials with these requirements:
- Ilmenite chunk
- 50 mL Bio-chem fluid
- One item with Hammering quality
- One item with Cutting quality
After that, smelt the Titanium Slab to complete the achievement.
Layer 1 is a good place to attempt this. Move carefully and avoid jumping or falling from dangerous heights.
15. Heavy Metal
Description: Smelt a titanium slab.
Craft a Titanium Slab using the following materials and item qualities:
- Ilmenite chunk
- 50 mL Bio-chem fluid
- Any item with Hammering quality
- Any item with Cutting quality
16. Certainty of Steel
Description: Have 4 P.E.O. limbs attached simultaneously.
Attach four P.E.O. limbs at once, after gathering the following crafting materials:
| Material | Quantity / Condition |
|---|---|
| Titanium slab | 1, at least 90% condition |
| Titanium sheet | 3 |
| Chunk of plastic | 2 |
| Circuit board | 2, at least 90% condition |
| Bundle of wires | 1, at least 90% condition |
| Any item with Nails quality | 1, at least 100% condition |
| Bio-chem fluid | At least 30 mL |
| Any item with Hammering quality | 1 |
| Any item with Cutting quality | 1 |
Once you’ve gathered these materials and crafted the P.E.O. limbs, attach four simultaneously to unlock the achievement.
16. Certainty of Steel
Description: Have 4 P.E.O. limbs attached simultaneously.
Attach four P.E.O. limbs to your character at the same time.
You’ll need to gather several crafting materials before you can make them. The required materials are:
| Material | Quantity / Condition |
|---|---|
| Titanium slab | 1, at least 90% condition |
| Titanium sheet | 3 |
| Chunk of plastic | 2 |
| Circuit board | 2, at least 90% condition |
| Bundle of wires | 1, at least 90% condition |
| Any item with Nails quality | 1, at least 100% condition |
| Bio-chem fluid | At least 30 mL |
| Any item with Hammering quality | 1 |
| Any item with Cutting quality | 1 |
Gather these materials and craft the required P.E.O. limbs. Once four limbs are attached simultaneously, the achievement should unlock.
17. …
17. …
Description: Become hollow.
Use the Mindwipe item when your brain health or mood is sufficiently low to achieve this.
Use the Mindwipe item to become Hollow.
18. Center of Attention
Description: Have 6 manifestations active at once.
Locate an area within the Crystalline Hollow layer where manifestations spawn, and get six of them active simultaneously to earn the achievement.
18. Center of Attention
Description: Have 6 manifestations active at once.
Manifestations are enemies found in the Crystalline Hollow layer.
Find an area where they spawn and get six of them active at the same time to unlock the achievement.
19. Pacifist
19. Pacifist
Description: Kill no guards during the escape sequence.
Complete the escape segment without defeating any guards. Emphasize running past them to reach the exit instead.
Complete the escape sequence without killing any guards.
Focus on running past them and reaching the exit. Avoid fighting, even when guards get in your way.
20. Round and Round We Go…
20. Round and Round We Go…
Description: Loop an endless run twice.
Begin an Endless run and complete two loops to unlock this achievement.
Start an Endless run and complete two loops to unlock this achievement.
Casualties: Unknown Gameplay Achievements
Casualties: Unknown Gameplay Achievements
These achievements are generally simpler to attain and necessitate particular actions during gameplay.
21. Transhumanist Description: The flesh is weak. Replace any missing limbs with prosthetic limbs to unlock this achievement.
Description: The flesh is weak.
Replace your missing limbs with prosthetic limbs.
Once you have a missing limb, attach a prosthesis to unlock the achievement.
22. Playing With Fire
Description: It might come in useful…
22. Playing With Fire
Description: It might come in useful…
Fire a shot from any weapon by finding one, equipping it, and taking a single shot.
Find a weapon, equip it, and shoot once.
23. It Refused
23. It Refused
Description: Let’s not give up just yet.
Trigger the Last Stand effect after dying by ensuring your brain integrity is 15% or lower (but above 0%) and that consciousness is below 30%.
Trigger the Last Stand effect after dying.
You need to meet these conditions:
- Brain integrity must be 15% or lower, but above 0%.
- Consciousness must be below 30%.
Once both conditions are met, the Last Stand effect should activate.
24. Hoarder Description: Achieve 100% overencumbrance (without minibarrels). Gather enough items to reach a 100% overencumbrance without using mini-barrels.
Description: Achieve 100% overencumbrance (without minibarrels).
Collect enough items to reach 100% overencumbrance.
Keep picking up items until your character reaches the required weight limit. Mini-barrels do not count toward this achievement.
25. ‘Tis but a Scratch!
25. ‘Tis but a Scratch!
Description: Survive a bite from an Elder Thornback.
Let an Elder Thornback bite you and then survive for a few minutes afterward without receiving further damage.
Let an Elder Thornback bite you, then survive for a couple of minutes afterward.
Avoid taking additional damage while recovering from the bite.
26. My Survival Over Yours
26. My Survival Over Yours
Description: They made you do it. That’s what you want to believe, anyway.
Unlock this achievement by killing another survivor in the game.
Kill another survivor to unlock this achievement.
27. Ain’t That a Kick to the Head
27. Ain’t That a Kick to the Head
Description: Survive a gunshot wound to the head.
Get shot in the head and remain alive for a couple of minutes without succumbing to more damage.
Get shot in the head and stay alive for a couple of minutes afterward.
Be careful not to take too much additional damage while waiting.
28. Neural Enhancement
Description: Use a neural booster.
28. Neural Enhancement
Description: Use a neural booster.
Find a Neural Booster and utilize it to unlock this achievement.
29. Expected Outcome
Description: Another one to the count.
29. Expected Outcome
Description: Another one to the count.
Simply die during a run to trigger this achievement.
30. Good as New
30. Good as New
Description: Heal a fracture.
Use a splint to treat a fractured limb and the achievement will unlock once healed.
Use a splint to treat a fractured limb.
Once the fracture is healed, the achievement will unlock.
31. Graduate
31. Graduate
Description: Finish all the training courses.
Complete every available training course within the game.
Complete every available training course in the game.
32. Express Route
32. Express Route
Description: Use a Drill Pod.
Find and utilize a Drill Pod to travel between layers. You may need to craft a Drill repair kit first.
Find a Drill Pod and use it to travel between layers.
You may need to craft a Drill repair kit before using the pod.
33. Dead Man Walking
33. Dead Man Walking
Description: Restart a stopped heart.
Use an Automated External Defibrillator (AED) to restart your heart after stopping.
Use an Automated External Defibrillator (AED) to restart your heart after it stops.
34. Thermal Camouflage
34. Thermal Camouflage
Description: Sneak past a turret through unconventional means.
To avoid detection, lower your body temperature before the turret by using QCold, then slip past it unnoticed.
Turrets react to warm temperatures, so you need to lower your body temperature before passing them.
Use QCold to cool your body, then sneak past a turret without getting detected.
35. Real Suck-Up
35. Real Suck-Up
Description: Reach max. reputation with a survivor.
Increase your reputation with any survivor until it is maxed out to earn this achievement.
Build your reputation with any survivor until it reaches the maximum level.
Casualties: Unknown Secret Achievements
Casualties: Unknown Secret Achievements
The following hidden achievements won’t reveal their conditions until you’ve fulfilled them.
36. Bright Idea Description: Really? You should know better! Find a Light Bulb and put it inside your mouth to unlock this achievement.
37. Level One Breach
Description: You can’t escape that easily.
Break the glass during the tutorial to earn this achievement.
Find a Light Bulb and put it inside your mouth.
This will unlock the achievement.
37. Level One Breach
38. Wrong Way
Description: You’re supposed to go down!
Begin a new run and head upward instead of down until you touch the invisible wall to unlock this achievement.
Break the glass during the tutorial to earn this achievement.
38. Wrong Way
39. Reading Comprehension
Description: Hey! The screen turned on!
Find and use the E-PDA item from the life-pods to unlock this achievement.
Start a new run and move upward instead of going down.
Keep moving until you reach and touch the invisible wall.
40. What Have I Done..? Description: Take your anger out on a little friend. Carry a Plushie in your inventory and enter the self-harm/suicide minigame; it will cancel the minigame and restore some of your mood, unlocking the achievement.
Description: Hey! The screen turned on!
Find and use the E-PDA item that appears on the life-pods.
Using the E-PDA will unlock this achievement.
40. What Have I Done..?
Description: Take your anger out on a little friend.
Carry a Plushie in your inventory and enter the self-harm/suicide minigame.
Having the Plushie with you will automatically cancel the minigame and restore some of your mood, unlocking the achievement.