Here is the full list of all 31 Oxide Room 104 achievements.
Try all the endings.
Find all Doc's documents.
Complete the game cycle without using bullets.
Find all Evil's documents.
Get out of the motel alive.
Trap Doc in the elevator.
Explore all the rooms.
Find all Matthew's documents.
Find all Eva's documents.
Heal Matthew after being poisoned.
Use the shovel to find one of the keys.
Escape from Doc and try to get out of the motel.
Go out through the door in reception.
Get out of the kitchen alive.
Get out through the restaurant.
Don't use the fireplace in the restaurant.
Avoid Evil in reception.
Go through the common areas to get to reception.
Go into the common areas.
Get out of the room on the third floor.
Get to the motel's third floor.
Find the way to the exit.
Use some bandages to stabilize Matthew.
Wait for the right time in the storage room.
Escape from Evil to get to the storage room.
Get out of 104 without forcing anything open or hurting yourself.
Get out of room 104.
Open a lock with a pick.
Play the entire song.
Get out of room 104's bathroom.
Force open a chest or door.