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