Full list of all 15 Rattyvity Lab achievements worth 2,000 gamerscore. It takes around 0.5-1 hour to unlock all of the achievements in the base game.
The base game contains 10 achievements worth 1,000 Gamerscore, and there is 1 DLC pack containing 5 achievements worth 1,000 Gamerscore.
You Passed Level 20
Finished!
You Passed Level 17
You Passed Level 15
You Passed Level 10
You Passed Level 5
You started the new Adventure!
You passed a level!
You collected a cheese.
You are now Rattyvity Lab Player
You Passed the Level 2
You Passed the Level 8
You Passed the Level 7
You Passed the Level 6
You Passed the Level 4