Wow! Great presentation! From the start, really cool soundtrack, then the intro was great, also with its own great soundtrack.
When the game begins, it's filled with cool effects, the effects of coins drop/pickup is rewarding, the map was easy to traverse and the challenges were interesting. I think I managed to jump in the air before unlocking the wall jump, but once unlocking it, the effect is very rewarding, how the character sticks to the wall right before, it looks cool overall.
I didn't like the attacks on the last fight, they can be memorized, kind of, but they don't give time to react, so when the intro to the attack starts, if you're in the area, you receive the hit. I'd prefer to have a "tell" to react to, because otherwise it feels every hit is entirely by luck. Having that said, the game gave me so much health that it was totally ok to be hit randomly by the boss, because it's still beatable. The effects towards the end of the fight are incredible, and the ending scene is also incredible.
In terms of movement, the jumps feel a bit unruly, specially the time-trial part feels that the jumps are unreliable most of the time. The double jumps require speed but feel good overall. The attacks feel responsive and enemies have fair hitboxes, but it's tough because it feels still to attack. and not being able to attack in the air makes fight moves more difficult.
Overall, a great experience, with a great presentation. Congratulations on your great work!