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