It should be fairly easy to win 100-0 in JJ2.

The way the whole engine works and stuff, it's more of a hit/miss battle, whoever hits first gets the point and has no damage doen to himself. The only question is if you would actually play your best for a total of 100 roasts, i'd get so bored in the end ill try kill ppl with all sortsa stupid ways like no ammo, or freeze them and stand right in frotn of them before you're allowed to shoot. Hhehehe, it's pretty fun to do sometimes, but you totally suck ofcourse