Completed the Golden Temple
Completed Antarctica
Completed the Lost Levels
Completed the Tower of Nannar
Collected all golden skulls
Unlocked every character and costume
Completed every stage of the main game as Aban Hawkins with a cumulative time of less than 30 minute
Found the Key of Serpentis
Purchased every unlockable in Conseil's Duty Free
Unlocked Space Marine Aban