I like the setup a lot and your take on theme, it reminds me a bit of mine ( death is an opportunity to profit.)
The art is cool, combination of gross and cute and the music is nice. The controls are bit unintuitive and hard to use, I think the main problem is with the collision boxes and movement speed. The grappling hook by itself is cool but there were a few times when it wasn't being drawn or gave me too much acceleration. I also thought that the map could use a more interesting layout, perhaps with a bit more room to swing around using the grappling hook