Lots of great aesthetic polish here. Sprites look crisp and interesting, and the rotated levels were a nice touch. I was getting SNES Mode 7 flashbacks. :). The game got too difficult for me in the level with the "too easy" hallway.
Jumping felt good, but the attacks seemed to be slower than I was expecting for some reason, especially for a ninja. (Maybe they start with a delay, maybe they're slow overall.) Not a big deal since the game doesn't seem to require precise attacks, just wanted to mention it in case it helps.
This might be the first jam game I've played with intentional controller support (where the game explicitly acknowledges controller support). Thanks for that! Platformers are way more enjoyable to me with a controller.