This game's challenge mode is called the Challenge of the Titans (seven trials), and requires players to complete a series of specific tasks (e.g., kill all enemies without being attacked). The player may unlock bonus costumes for Kratos, behind-the-scenes videos, and concept art of the characters and environments, as rewards, as well as usage of the abilities found in the urns during the first playthrough. Completion of each difficulty level unlocks additional rewards, as does collecting twenty eyes from defeated cyclopes. A new mode, called Arena of the Fates, allows players to set difficulty levels and choose their own opponents to improve their skills.