Quite easy once you know the routine
Run towards the enemy, press ''S'', and you perform a jump attack that the opponent can't block, even when he attacks you. When he is stunned for a while, run to the other side and repeat. With this tactic, you can beat skill level 10 guys without losing HP. Don't use your special attack, and really dont try a close fight for a while.
Though it's really easy, i think it deserves a score above the 3.40. It has good and funny graphics, and works fine for me. Although the ''100p'' cheat doesn't work. (Or does it say anything else after the 100p, that I can't read?)