Here is the full list of all 12 A2 Zygon achievements.
Destroy all 30 targets in the Tutorial.
Buy all gold cards.
Buy all platinum cards.
Buy all rose gold cards.
Buy all cards.
Complete all challenge levels.
Finish the memory game.
Get captured in a jar by Adley.
Reach Osilis without any upgrades during the easy route.
Get the bad ending with any character.
Get the good ending with any character.
Watch the perfect ending.