Woah, this is actually inspiring in its presentation. Even with no original graphics, you made it have a very distinct style with the camera work and the text layouts and the feedback/sfx when you get a new item... very impressive. I think the camera stuff could use some refinement, but you're definitely onto something. I really want to try experimenting with camera work myself now!
At the moment though it does seem to be a little unstable, with some camera jitter. Got a little motion sick, ngl lol. The powerups were pretty standard but I'd say they were solidly executed, wall jumping was satisfying especially I think.
Good stuff!