Casualties Unknown has 40 Steam achievements, and several demand more than simply reaching the end of a run. Character-specific finishes, unusual injuries, equipment upgrades, and hidden outcomes all count. Here are the documented unlock conditions, plus a sensible way to pursue them.
Casualties Unknown Achievements and How to Get Them
| Achievement | Requirement or Known Clue |
|---|---|
| ... | Become hollow. The steps are not specified. |
| Express Route | Use a Drill Pod. |
| Transhumanist | Clue: "The flesh is weak." Exact trigger unconfirmed. |
| Neural Enhancement | Use a Neural Booster. |
| My Survival Over Yours | A forced or regrettable choice is implied; no exact action is given. |
| Thermal Camouflage | Pass a Turret using an unconventional method. The method is not identified. |
| Ain't That a Kick to the Head | Live through a gunshot injury to the head. |
| In and Out | Beat the game in less than three hours of in-game time. |
| Dead Man Walking | Restart a heart that has stopped. |
| What Have I Done..? | Clue: "Take your anger out on a little friend." Specific target and action unconfirmed. |
| Center of Attention | Keep six Manifestations active at the same time. |
| Round and Round We Go... | Loop an Endless run twice. |
| Certainty of Steel | Have four P.E.O. limbs attached simultaneously. |
| Hidden Achievements | |
| It Refused | Clue: "Let's not give up just yet." Exact trigger unconfirmed. |
| 'Tis but a Scratch! | Survive an Elder Thornback bite. |
| Millions to One | Obtain the cargo. |
| Company's Best | Complete the mission. |
| Cannon Fodder | Finish a run as an Experiment. |
| TOP OF THE FOOD CHAIN | Become the apex predator. No precise method is provided. |
| Company's Worst | Gain your freedom. |
| The Marksman | Finish a run as a Milky. |
| To Be Continued... | Fail the mission catastrophically. |
| The Cannibal | Finish a run as a Dune. |
| Pacifist | Kill no Guards during the escape sequence. |
Steam lists 40 achievements, but the supplied listing names only 24, including all 11 hidden entries. The remaining 16 are not identified here. Where Steam offers only a clue, the exact unlock method is left unconfirmed rather than guessed.
The Best Order to Unlock Achievements
Start with achievements tied to an action you can recognize immediately. Express Route, Neural Enhancement, and Certainty of Steel have clear equipment requirements. If a run gives you access to a Drill Pod, Neural Booster, or P.E.O. limbs, you have a specific objective instead of a vague clue to chase.
Save Separate Runs for Each Character
Cannon Fodder, The Marksman, and The Cannibal call for finished runs as an Experiment, Milky, and Dune. That makes character selection part of the achievement plan before the descent even begins. Work toward one character finish at a time rather than treating these as interchangeable endings.
Distinguish Mission Results From Character Finishes
Millions to One, Company's Best, Company's Worst, and To Be Continued... refer to cargo, mission completion, freedom, and catastrophic failure. Their descriptions establish separate objectives, but do not confirm which outcomes can be earned together. Track the result of each run before deciding what to attempt next.
Pacifist adds a specific restriction to the escape sequence: do not kill any Guards. Since the achievement is tied to that sequence, the important decision is how you handle the escape, not your entire earlier route.
Achievements Worth Leaving Until Later
I'd hold off on deliberately pursuing Ain't That a Kick to the Head and 'Tis but a Scratch! until you're confident treating injuries. Both require surviving a dangerous attack, not merely encountering the source of damage. A helmet can help protect against head trauma, but it does not establish a guaranteed way to survive a gunshot.
Dead Man Walking asks you to restart a stopped heart. The supplied gameplay information identifies defibrillators, an Auto-Pump, and Epinephrine as relevant cardiac tools, but it does not confirm a guaranteed achievement method. Treat a successful medical rescue as an opportunity, not a reason to manufacture a cardiac emergency.
In and Out and Round and Round We Go... reward opposite priorities. For the former, cut unnecessary detours to stay under three in-game hours. For the latter, prepare for a prolonged Endless run with two loops rather than a quick finish.
Finally, don't mistake a suggestive Steam description for a verified solution. Transhumanist, My Survival Over Yours, It Refused, and TOP OF THE FOOD CHAIN still need specific trigger information. The same applies to the unnamed steps behind Thermal Camouflage and What Have I Done..?. Until those are confirmed, the clearest achievements are the best targets.
You can view the game and its achievements through the Casualties: Unknown Steam page.
