I recently ran through Y with a few (not too many) restrictions: 1) General Nuzlocke rules apply. 2) Exp. must be turned of at all times 3) No Super Training. At all. 4) I can only use Pokemon Amie for Eevee - if I intend to evolve in into Sylveon. Sylveon is free game on Amie, since I had to use it to get Sylveon. 5) No Mega Lucario. Its' broken in-game. 6) No running from horde battles. Additionally, I ran a 'No Pokemon may enter the gym higher than the highest level of the Gym Trainer's Pokemon' Clause, and entered the E4 at 64 instead of whatever Gardevoir is at. Let me just mention how invaluable Snorlax was throughout the game.