Receive the Deathmatch, Endurance and Eliminator titles by using the same character for all on normal, hard OR very hard difficulty level. Buzzsaw should be a selectable character.
City Canal arena
Finish all of the Deathmatch level on the normal difficulty level and the City Canal arena will be available in the mutli-player and quick battle modes.
Finish all of the Eliminator levels on the normal difficulty level and the Downtown arena will be available in the quick battle modes and multi-player.