Glitches for Link's Awakening
In the first dungeon, jump in one of the pits, then, just after falling in, but not after the screen changes, jump using Rocs Feather.  You should end up in a wierd room with a bunch of doors.  Go thru one and it will lead you to a different dungeon.

Credit goes to Alex.
(He had the Leval 2 bracelet before finishing the 1st dungeon.)