Any% - utilize glitches
Invitation% - forgo major skips
Pendant% - extra Gold Skulltula in tree in Zora's River
Ganon% - ledge cancel to get Bombchus early
100% - Get 10 hearts, 30 stick capacity, 40 nut capacity, a slingshot, 50 seed capacity, Bombchu, boomerang, hammer, ocarina, invitation, pendant, both swords, both shields, a bottle, the Stone of Agony, 500 rupee capacity.
100% and more - same as above, plus heart pieces from skull kids, fishing, NPC in Zora's River, and Treasure Chest Shop, making it 11 hearts. Bombchu hover to Haunted Wasteland to Desert Colossus. Get heart piece, mirror shield, silver gauntlets, but can't kill Twinrova without hacking in an equip-able mirror shield.
The Shadow Temple can be completed as a child I think. Get the Golden Scale via glitch. Defeat Gohma, 13 hearts and 1 piece. If somehow we can wrong warp to Death Mountain, we can get 4 more heart pieces and another heart container, a bomb bags, and Magic, Nayru's Love, another heart piece and we have 15 hearts, 2 pieces.