you mean the super suit? I myself have never bothered to get it, but heres what you have to do:
go to monstro town and talk to the guy who talks about super jumps. Then go off an fight something and jump on it 30 consecutive times. go back to the guy, get an attack scarf, and then bounce 100 consecutive times on some monster to get the super suit.
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Sors salutis
et virtutis
michi nunc contraria,
est affectus
et defectus
semper in angaria.
Hac in hora
sine mora
corde pulsum tangite;
quod per sortem
sternit fortem,
mecum omnes plangite!
you really dont know, do you??