I decided to improve the Duel Mode gameplay from pixel brawler, Micro Super Defense Force. You and the opponents now have lots of extra HP, which will give you more time to mess around with the advanced functions like overpsy and guard breaking, and I remembered to turn the music back on (derp). If you played Micro SDF recently, you may have to erase it from your browser history to view the new version. Playing it on a different browser also worked for me.