Challenge of the Titans: Complete the game to unlock this seven room challenge.
Arena of the Fates: Earn the rank of Titan in Challenge Mode to unlock.
Titan Mode: Complete the game to unlock this harder difficulty.
Urns of Power: Complete the game to employ in play (you find 4 of the 6 through your adventure; the last two you must earn through high ranks in the challenges).
There are seven bonus costumes to unlock.
Costume 1 // Complete the game on any difficulty.
Costume 2 // Complete the game on any difficulty.
Costume 3 // Complete the game on God Mode.
Costume 4 // Complete the game on Titan mode.
Costume 5 // Complete the game on Titan mode.
Costume 6 // Collect 20 Cyclops Eyes in the main game.
Costume 7 // Receive the God ranking in Challenge mode.