No missable achievements (plus 27 unknown)
Sign in with Steam or Xbox to track your progress, and:
Kill wanton with single shot in a head.
Slain first wanton.
Blow first destructible using gas tank.
Kill wanton using gas tanks only.
Slain first Puker.
Collect all available weapons.
Fire-off all hands of wanton, than finish it with a headshot.
Fix generator with fuse.
Encounter Reaper for the first time.
Slain first flying enemy.
Go trouth all hallucination events in Laboratories.
Get caught by Reaper.
Escape planet dream and get back to Shakhter-One deck.
First bullet for Reaper.
Finish Hollow game.
Unlock ending A.
Find all girl posters.
Find all documents and notes.
Find all collectable radios.
Finish game at HARD difficulty.
Unlock ending B.
Kill burning Puker.
Find way out of Cable Maze.
Sync all generators.
Get killed more than 50 times.
Finish game at HARD difficulty under 3 hours and do not use Save Discs.
Kill all monsters available in a game.