Here is the full list of all 40 ExZeus: The Complete Collection achievements.
NOVICE RANK
ROOKIE RANK
TRAINEE RANK
FIGHTER RANK
PRIVATE RANK
SERGEANT RANK
LIEUTENANT RANK
CAPTAIN RANK
COLONEL RANK
GENERAL RANK
MASTER RANK
ASSASSIN RANK
PREDATOR RANK
PUNISHER RANK
DESTRUCTOR RANK
WARLORD RANK
CONQUEROR RANK
EMPEROR RANK
LEGEND RANK
IMMORTAL RANK