Done. 15 deaths and too many retries, for the reason I'll list below:

1. You might want to adjust the number of strong Like-Likes in certain areas. They for some reason have a bad tendency to skip the Boomerang and eat your shield. It made for a very frustrating Lv. 9 experience.
2. Ganon takes WAY too many hits. 8 is enough. God forbid you don't find the Red Ring.

OK, now for your grading:

Difficulty: 95/100
VERY hard, but passable. Might be a little too difficult in some spots. I suggest playtesting without cheats more to get a better feel before the deadline.

NES Authenticity: 95/100.
Very high marks here. True to the NES with new enemies.

Fun Factor: 70/100
Lv. 9 was a very frustrating experience. The Like-Like rooms were just ridiculous, and led for an infinite number of resets. I got a headache from the stress and the heart-pounding, and as far as classic games go, thta's very hard to do to me. I might sound a little rough here, but sacrificing like 5 NES authenticity points to break enemy groups for the final and do an enemy review might be a much better idea for Level 9. It's more fun and will leave a better experience with the player. Hell, the 3rd did it and still won.

Overall score: 86.67/100