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