Here is the full list of all 9 Antecrypt achievements.
Finish the game in normal mode
Finish the game in hard mode
Finish the game in cryptic mode
Finish the game with SCAN rank 5 in hard+ mode
Finish the game with VRAM rank 5 in hard+ mode
Finish the game with BATT rank 5 in hard+ mode
Finish the game with BOMB rank 5 in hard+ mode
Finish the game with ZONE rank 5 in hard+ mode
Finish the game with POWR rank 5 in hard+ mode