I like this concept! I wish gliding didn't kill your momentum quite so much. Made me avoid using it whenever possible because it just wasn't fun to play with. But still, never met a grappling hook game I didn't like!

The color palette is incredible! The grappling hook is pretty fun and mostly satisfying to use. Although the game starts too hard, you should try starting with a simple pit or something similar. Also it would be more smooth if you could click anywhere to use the grappling hook, then just check if it is a valid surface to hook into.

I hope you develop it further! Really cool entry.

I love everything about this game - the difficulty is insane but when you finish a level it is very satisfying. I made it to level 3 and boi it is tough as hell. I think there may be some minor improvements on the mouse controls but I also don't know if my mouse just sucks.
I think this would be an amazing Steam game! I'd love for you to flesh it out more and make a full game. As far as fitting the theme goes, I think it does but on a minimum level.

The feeling of the game is amazing! But is too tought at the beginning :O