Here is the full list of all 74 Toy Odyssey: The Lost and Found achievements.
Get an enemy killed by other enemies actions
Manually end a night 1st time
Kill 1st enemy
Open Inventory 1st time
Pick up the 1st Diary page
Open Free prisoner for the 1st time
Open Scavenge Point for the 1st time
Bet at a Slot machine for the 1st time
Turn on the Power Stabilizer for the 1st time
Turn on a Light Switch for the 1st time
Kill a spider with fire
Kill a Ninja with Shuriken
Death by a Dinosaur 10 times
Death by Clown 2 times
Kill 10 Paper Cranes in one play through
End the night with only 1s room revealed 10 times
Beat a Boss without using Off-hand
Beat a Boss without taking damage
Collect 1000+ Nuts in one play through
Open all doors in one play through
Turn on all lights in one play through
Break 100 breakable in one play through
Kill 100 enemies in one play through
Kill 30 enemies in one play through without taking damage
Go 5 room from base without killing anyone
Open 10 Chest in one play through
Win at the Slot machine 3 times in a round
Activate 10 Rat holes in one play through
Fail 3 Challenges in one play through
In the air for 10 seconds
Complete the games within 49 nights
Use all four weapon type for the 1st time
Complete the 1st Side Quest
Change all type of equipment for the 1st time
Shut down the 1st Dark cabinet
Use a Rat hole for the 1st time
Death by a Dark rift for the 1st time
Open a Safe for the 1st time
Build the 1st ever structures
Got Raided for the 1st time
Craft the 1st thing ever
Complete full game
Open all diary pages
Kill the 1st Boss
Kill every type of enemies
Visit every type of room
Complete all Monger’s Side Quests
Complete all Pike’s Side Quests
Complete all Grendel’s Side Quests
Complete all Archie’s Side Quests
Complete all Pat’s Side Quests
Complete all Smythe’s Side Quests
Complete all Mantle’s Side Quests
Complete all Curio’s Side Quests
Complete all Nina’s Side Quests
Complete all Ron’s Side Quests
Collect 50% blueprints
Collect all blueprints
Collect all types of material
Craft 1000 Times
Open 100 Chests
Collect 10000 Nuts
Win at the Slot machine 10 times
Open 30 Challenge Chests
Break 300 Breakables
Switch the light on 100 times
Collect material 1000 times
Open 100 doors
Pick up 50 Keys
Kill 1000 Enemies
Die 100 times
Successfully Defend 10 times
Drop 100 drop platforms