I liked the overall approach to a mometum-based grappling game. I really liked the art style and I appreciated the chill music playing in the background. I also really found the in-level arrows to be a big help, otherwise I would get stuck sometimes. Overall I enjoyed my experience.
I think this game has a high skill ceiling and a high skill floor, which means its a lot of fun if you are skilled, and its even more fun if you are very skilled, but if you are a novice, its not as fun as it could be. Nothing wrong with that, just makes it a more niche game in my opinion.
I think the game could have been much more engaging even to a novice by making everything move faster, with more gravity, higher initial speeds, and all jumps and movement be less floaty.
I think you could expand on this by making the swinging feel more stylish and adding some kind of points / score / style meter - like in skateboarding games - for different kinds of movement, swings, flips, jumps, combos etc.
My team also made a grappling hook game, so I would appreciate it if you could check us out and give any feedback. Your feedback will be very valuable since you also made a grappler.