This was a really beautiful pixel platformer! The artwork is stunning, and looks very polished. The music/audio is really good too, and together they gave the game a nice retro vibe. Classic gameplay, perhaps not that original, but implemented in a way that was very fun and satisfying. I enjoyed dashing and double-jumping around the guns in the last section, my only complaint is that the level was too short lol.
There were a few pain points in the gameplay for me - it would be nice to have a few checkpoints because I kept dying and having to repeat a lot of stuff. The ‘spiky’ walls didn’t look like hazards at first. And there wasn’t much of a reason to use the shooting ability, though it certainly had a cool animation :).
I didn’t see how the ‘Rebirth’ theme was involved in the game at all though? The main character is a phoenix(?), but that seems to be about it.
Great work overall :). Personally though, I’d have liked to see a rebirth-related twist in the standard platformer mechanics, to give it a more original spin.