Remix and add your character, don't forget to use the scripts in the sprite that clearly says script you need .Fight the bosses and try not to die You have only 1 HP!! (even if your supposed to be immortal like cat god or something) And also, for madcreeper, you cant absorb the attacks. As for brick, you can change forms. (Cuz your forms are based on damage taken) And for meep, you'll have no trouble with this.
