Raid Mode began as an action-packed "shoot-and-loot" style additional mode in the previous "Revelations." Players battle their way through an army of enemies on multiple stages in order to collect more powerful weapons. These weapons can be customized to their liking and then used to take on harder stages with even stronger enemies. That finely tuned and satisfying game play loop kept many a player entertained for hundreds of hours even after they had finished the game's main campaign.