According to THQ’s press release, the “Arena Challenge Mode” will offer players prizes for burning through waves and waves of enemies without dying.
There’s 100 waves of combat to endure, and you’ll pick up bonuses for every five waves you survive (and likely an extra Achievement or PS3 Trophy if you complete the set).
Notably, Darksiders didn’t have a full “New Game+” mode, but instead offered players the ability to start the game again with the extremely beefed-up optional Abyssal Armor