On the options screen enter only one of the following (If you enter more than one the last one you entered will be activated):
"MBARIVIDISOCCAFFARIMBARI"--To play as Shadow fighter
"PARAPONZIPONZIPO"------------------To play as Pupazz
"TIRIKAKKU"----------------------For infinite credits
During play, press 'P' to pause the game and type any of the following:
"EBBRAVOSCECCU"----To win the current round
"CUNIGGHIUACCURRENNU"--To Speed up the game
"SURICIMONCU"--------------For normal speed
These cheats might also work on the ECS version.