Great fun game - it gives me a lot of classic sonic vibes with a bit of Wario Land 4 (even if that wasn't one of your inspirations). I love the art style of the characters and I enjoy the movement! It feels very good to go fast when you get the hang of it, and it feels like a proper platformer.
I think one thing that could be improved is visual clarity and some of the level design.
While I enjoy the character art I think the clarity of the level itself takes a while to get used to. The red on top of dark red background sort of make things a blur to see. Despite the tutorial, it was still hard to tell that I had to run into certain things and hit other things as well.
For level design I think it can kind of rely on funneling players into one straight path that can be hard to do. I do see alternative branching paths here and there, but it never really felt like one was the easier/slower path. I think for inspiration, besides classic sonic, I think you can look into something like Antonblast, which also has a similar "hit objects to go faster" vibe.
Overall though when I was able to get in a flow state and get through a part of the level, IT FELT SO GOOD and I felt really cool. When it clicks, the game really clicks together and it can feel awesome. I love the moveset, in particular how you can do the crash bandicoot dash thing to immediately get speed. It's a cool design choice because it can be risky to do so in a tight space, but it rewards you with a lot of speed. Congrats on getting this game done!