Here is the full list of all 26 Kohate achievements.
Throw an object.
Press all very important red buttons.
Collected all data blocks.
Get ending one.
Get ending two.
Get ending three.
Die holding the safety pillow.
Hit the monster with a safety pillow.
It does nothing.
Beat the game using only backwards movement.
Beat the game without being chased by the monster.
Beat the game (any ending) in under 15 minutes.
Beat the game without using the light orb.
Beat the game without using access doors.
Die in the tutorial.
Die from radiation exposure.
We don't do that here...
Work until it's done.
Beat the game without dying.
Die in hell mode.
Beat the game on hell mode.
Kill R118.
Get ending four.
Choose to arm yourself.
Die from gas.
Blow yourself up.