what do you need for 100%, it doesn't say what you need in the category rules

True, i will fix this soon, sorry about that.

Basically: All Silver Keys (so normal any%) All Gold keys (finish each world having atleast 3k rupees) All Hero Keys (finish each world having atleast 5k rupees) All Realm of memories maps All Hero Trail Maps All Vaati's (you unlock a new vaati after gold key and Hero key)

That should be all, hopefully i didn't forget something

GBA 100% is Minus RoM and HT DSi exclusive areas

Note that you must defeat Vaati #2 after Gold Keys in order to unlock Hero Keys, other wise you will wasting your time trying to obtain HKs.