Here is the full list of all 33 Creeper World 2: Anniversary Edition achievements.
Completed Bonus: Abyss
Completed All Bonus Missions
Completed All Missions
Completed Bonus: Cubic
Completed Bonus: Assault
Completed Bonus: Barbarian Hordes
Completed All Story Missions
Completed Story Day 20
Completed Bonus: Odyssey
Completed Bonus: Stygian Depths
Completed Bonus: Shields Up!
Completed Story Day 19
Completed Story Day 18
Completed Story Day 17
Completed Story Day 16
Completed Bonus: Minion Surprise
Completed Story Day 14
Completed Story Day 15
Completed Bonus: Positronic
Completed Bonus: The Tree
Completed Story Day 13
Completed Story Day 12
Completed Story Day 11
Completed Story Day 10
Completed Story Day 7
Completed Story Day 8
Completed Story Day 9
Completed Story Day 6
Completed Story Day 5
Completed Story Day 4
Completed Story Day 3
Completed Story Day 2
Completed Story Day 1