Retrieved the Foreman's dogtag.
Blocked the beast's path out of a hole.
Discovered the beast's nest in the chapel.
Lit up a fuel puddle.
Used meat to lure rats away from a corpse.
Acquired the lighter.
Survived first encounter with the beast.
Used gas on the beast.
Burnt a corpse to a nice char.
Released the emergency lockdown.
Blew up a door with a barrel.
Found the Adminstrator's office.
Quit the game right as things got interesting.
Collected all the other achievements.
Retrieved every note.
Opened all the lockers.
Completed the game faster than all developers at Frictional.
Found all the maps.
Acquired the gas mask.
Found all pocket bags.
Got the cutters and locked the cell again without the German Prisoner dying.
Acquired the shotgun.
Acquired the rabbit doll.
Sent the beast back into the screaming darkness.
Hurt the beast by triggering a trap.
Completed the game without saving.
Never dropped nor stored an item.
Disarmed a trap.
Showed the beast the bunny.
Re-acquired the rabbit doll.
Escaped the bunker.
Burnt a lot of dead bodies.
Opened every vent and cut every chain.
Blew open a door with a shotgun.
Blasted a rat with a shotgun.
Heard the message on the radio.
Blew up lots of rats with a single grenade.
Shot at the visions in the tunnels.
Found the Cutters.
Found the Dynamite.
Found the detonator handle.
Finished the game.