Really well done. A lot of juice in this game which makes moving around feel really good. The sounds are great. I wish the music had a more energetic tone then I would really feel like I was a badass roping down some cave.
The artwork is great. Really good readability on the screen. I love the innovation and the variety of obstacles. I think it was just about the perfect amount of variety for the amount of levels. The movement felt nice too.
One minor thing like another person before has said, once I got the dash I hardly ever used the jump mechanic. I would just dash to the other side almost every time. And when I did want to jump I always confused myself and ended up getting hurt. And maybe all it would take is changing the keybinding.
Overall, if there were more levels I'd still be playing it :). I didn't see any bugs for level 5 on my end since I was able to beat it. Maybe I missed it but every thing seemed to play well! Great work, very nice game, and cheers!