Here is the full list of all 32 Rage Room achievements.
10 Decapitations
10 Broken Legs
10 arms broken
Destroy a dummy in under 60 seconds
Take longer than 15 mins to destroy dummy
10 drones destroyed
Destroy 100 dummies
Destroy 5000 dummies
Destroy 1000 dummies
Keep the dummy in the air for 10 seconds
Complete the first level of the game
Unlock all weapons
Unlock all accessories
Destroy over 9000 dummies
Get knocked out by a dummy
Get knocked out 100 times by dummies
Destroy 2 dummies without getting hit once
Destroy 5 dummies with the balloon hammer
Destroy 5 drones with the bubble gun
Destroy 5 dummies with bubble gun
Destroy 5 drones with a football
Destroy 10 dummies with a steel chair
Destroy 20 drones with the crossbow
Destroy 5 dummies with throwing knives
Destroy 25 dummies with landmines
Destroy 25 dummies with the scythe
Destroy 5 drones with the bat
Break off a dummy's head with the toy glove
Get 50 kills with the gravity gun
Get 10 kills with nail or regular boxing gloves
Use the fidget spinner for the first time
Destroy 50 dummies with a baseball bat