Gates of Hell Arena was a game mode where Dante could grind through waves of enemies. The player must defeat the waves within the alloted time. There are a total of 50 waves at the end of which the "Gates of Hell" achievement/trophy would be unlocked. When starting the Gates of Hell Arena, the game will prompt the player to choose a save file from which all upgrades, abilities, magic, relics and souls would be available. All purchased and unlocked costumes are available here.
The player fought waves of increasing difficulty starting with a 5 minute time limit (For the whole mode) which could be increased by: Completing a wave, punishing/absolving enemies and completing a wave without taking any damage (Untouchable). After all of the enemies are defeated, the gates are opened, but the next wave would not start until the player went through them.