Athena— Complete the game on Titan mode.
Blade of Olympus— Complete the game, then start a New Game+/Bonus play.
Cod of War costume— Complete the game on any difficulty level.
Dark Odyssey— Complete the game on God mode.
General Kratos— Collect 20 Cyclops eyes. Must kill them with a context-sensitive move. Meaning the O button.
God Armor(The best costume, Doubles all stats)— Receive God ranking in Challenge mode.
Hercules— Complete the game on Titan mode.
Hydra Armor— Complete the game on any difficulty level.
Unlock Arena Of The Fates
Receive Titan rank on The Challenge Of The Titans to unlock in the Treasures section.
Kind of a practice mode where you choose the health/magic/abilities/enemies, ect.
Challenge Of The Titans Mode
Complete the game on any difficulty mode to unlock in the treasures section.
Exactly like the Challenge Of The Gods mode from the first God Of War, except there are 7 challenges.