User blog comment:Mntldisorder/play alone?/@comment-2249418-20110325132237

Driving around in the arena with Mad Mel isn't the best way to get things done. Go inside the arena to get him to spawn. Then die. When you respawn, stand on the very edge of the entrance to the arena (be sure not to fall in) and pick away at him with a corrosive gun. Have fun, the game only gets better from there.