Enjoyed playing this. Some of the mechanics encourage the player to stop between tough sections for health/stamina to recharge, so it's easy to bore yourself waiting, but it feels like the only option. I think health should have been handled similarly to ammo where it replenishes at checkpoints. Tough to balance though since you can collect lost arrows but not missing health.
The simple tutorial boxes were neat and mostly helpful. The one showing how to defeat the cannons took me too long to figure out.
Art and sound were simple and cohesive. Very good retro feel, and the platforming itself was fun.