Great art and sound, and the mechanics were challenging but not frustrating. I also liked how some parts of the level had an upper and lower route that you could take so that each run was different. The controls did feel a little sluggish, especially when moving from a complete stop. I think speeding up the character might make it more fun and chaotic!
Thank you for posting the first game jam feedback I've ever received. =)
What I was thinking when I designed the movement system was that acceleration is slower when running on slick surfaces, so it is a little harder to get going from a complete stop. Deceleration is also slower, so it's hard to stop moving. I could change these exact levels a bit in the future, or vary them by stage.
Perhaps I could make the dash faster at higher difficulties, since it would make surfaces feel even more slippery, while also adding a tool for more experienced players. 