Build up a lot of money before downloading the v1.0.0.3 patch, because the opponent robots will be supercharged. For example, Zombie now has two chain saws in the front and Urban Menace has new wheels and two knife blades that poke out in front of him. You will also have new robot opponents. Some of them include Topknot, an updated Gammaraze, ScooterPie, Sixpack, Pontoon, and Triclops. It is a good idea to win tournament mode before you get the patch, as there will be nine robots instead of seven and the dollar values are lowered for winning a match. You will also get a new weapon, the chain saw.