Off the bat, the art style for the game is quite easy on the eyes which is exactly the design it needs. One of the cool touches I noticed was the environmental design you put into the backdrop and forefront of the game (floating bricks do b kinda epic doe). To add to this, the sound design for both the character's sound effects and the stage loop really fit with the mood and aesthetic the game seems to be trying to achieve, and manages to achieve a tone of "danger and adventure" while still keeping the light hearted tone of lil old Gizmo and his adventure to get his arms back. Also love the animations on the character, pretty cool.
Mechanics wise, I felt there were a few areas that maybe could be improved. As other people mentioned, the dash mechanic can be slightly unresponsive at times. That being said, it actually made the game a lot more difficult which frankly added to the overall fun experience. Level-based platformers are always made with difficulty in mind, and if it gets you replaying the same level to try and complete it, then it's doing its job I guess. Other than that, I think movement was good and solid (although if I had to add extra extra unnecessary critique, it'd be that the hitbox of the wizard would tend to bug out when hitting the side of blocks, but that didn't impact my gameplay experience xD )
Level design wise, I think they've been designed pretty well. You've got atleast 2 different varietys of spikes which adds a bit more difficulty in the later rounds. The blue jump pads adds another depth to gameplay and mixes up what the player is used to control wise, but does so in a really engaging way that doesn't take or destroy what the player expects from the controls. (maybe with this, introduce it later to switch up gameplay even more!) My only critique with this is that it'd be cool if there were more levels, as you have a good range of obstacles and plenty of options to use them (not that the levels in there weren't already using them well anyway).
big pog overall, nice job :)