Here is the full list of all 23 Terrorarium achievements.
Completed the story campaign!
Unlocked cut scene! (Cut scene before 8)
Unlocked cut scene!(Cutscene before 12)
Unlocked Cut scene! (Cutscene before 15)
Unlocked Cut scene! (before 18)
Unlocked Cut scene! (before 21)
Conquered the first-place winning contest entry by Oscar Rooney!
Created a brand new level!
Published a level!
Subscribed to a community level!
Completed a level with just one Moogu remaining!
Complete a level with 50 Moogu remaining!
Hurled 500 Moogu!
Hurled 1000 Moogu!
Hurled 2000 Moogu!
Hurled 5000 Moogu!
Set a cabbage on fire!
Blew up 20 turnips!
Destroyed 4 walls with Thick Moogu
Set fire to 20 enemies!
Stuck 20 enemies in Gooey Moogu entrails!
Produced 1000 Moogu!