The fire temple and having to do something with the scarecrow confused the[censored] out of me, the water temple wasn't even an issue but just getting an idea of what the hell your meant to do after running around the game for days gets annoying.
Majora's mask i still havent finished, theres a part ( i cant remember exactly ) but im stuck there and every now and then i put it on, execute my game face and end up turning it off because i cant go any further