Here is the full list of all 42 Killing Room achievements.
Take 50 items.
Complete 250 rooms.
Kill 1000 enemies.
Get one item from real viewers.
Die 10 times.
Open 10 coffins.
Save 5 ducklings.
Kill 500 enemies
Kill Duna Boss.
Kill 10 boss creatures.
Take 10 rare items.
Solve puzzle in last 5 seconds of countdown.
Take 20 items.
Take 5 rare items.
Pick up 20 medkits.
Kill yourself in Suicide Booth.
Take 5 legendary items.
Complete 25 rooms.
Take 3 legendary items.
Kill enemy while being trapped in Bear Trap.
Cover otherwise deadly hit.
Kill 2000 enemies.
Die 50 times.
Finish the game with at least 10 Trouble items in inventory.
Win Killing Room.
Win Killing Room 5 times.
Save 20 ducklings.
Solve 10 puzzles.
Solve 50 puzzles.
Open 50 coffins.
Pick up 100 medkits.
Max your Damage stat.
Max your Health stat.
Max your Stamina stat.
Max your Accuracy stat.
Max your Magazine stat.
Max your Speed stat.
Complete 1000 rooms.
Kill 50 boss creatures.
Kill 5 ducklings.
Kill 20 ducklings.
Win game on Hard mode.