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.
Play the entire song.
Get out of the motel alive.
Trap Doc in the elevator.
Get out of the kitchen alive.
Get out through the restaurant.
Find all Evil's documents.
Don't use the fireplace in the restaurant.
Find all Matthew's documents.
Avoid Evil in reception.
Find all Eva's documents.
Go through the common areas to get to reception.
Explore all the rooms.
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.
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.
Get out of 104 without forcing anything open or hurting yourself.
Wait for the right time in the storage room.
Escape from Evil to get to the storage room.
Get out of room 104.
Open a lock with a pick.
Heal Matthew after being poisoned.
Get out of room 104's bathroom.
Use some bandages to stabilize Matthew.
Force open a chest or door.