As a Wriggle Nightbug fan, this was something I had to try. And, wow. Wriggle Nightbug feels amazing to play as. Extremely fast movement speed. Backflips, wallkicks, double jumps, and a flying kick that doubles as both an attack and an airdash. The divekick and rollout combo is really cool: I wish there were more places to use it.
Graphics are pleasing: I like the choice of colors. The music is outstanding! The first stage theme is something I'd listen to on its own, it's very good.
The two bosses are loads of fun to fight. Contrary to the other reviewers, I didn't find Alice's second phase particularly hard to hit. With enough skill, she can be hit repeatedly while jumping between the walls. Once, I managed to defeat her before she was finished setting the phase up, which caused her to glitch out big-time.
Main complaint is that the level design feels unpolished. In particular, the setups in the second and fifth levels are rather awkward. The introduction to ceiling-running isn't very clear. The freeformness of a lot of the terrain feels unprofessional, and the particularly steep slopes used in a few places are very janky.
It's often hard to see where you're going. You could try making the camera look forward in the direction you're moving, instead of being right on your character at all times.
Very minor nitpick, but the kick button doesn't do anything if you're clung to a wall, so it's very easy to accidentally cling to destructible blocks and be unable to break through them.
All in all, lots of fun. This is something I would love to see more of.