I beat 5/20 heres some assistance. Immediately start by shutting both doors, and Rotten Scratch will usually camp one door, so open up the other one, usually Tera is on Rotten Scratchs side, so youll have to worry about Gobo and Scratch Cat. But they're pretty easy. Eventually, the characters will switch doors, just switch to the door Rotten Scratch isn't at, and through all of this, remember Picos distinct noise, you should be able to beat it at 0% power