Ok this game is sweet! I underestimated it at first, but your physics feel really good and the tough as nails challenges were really satisfying to beat! I didn't quite make it to the end but I left satisfied. Learning to connect to two at once was a fantastic 'aha' moment. If you wanted to keep working on this, theres a few little quality of life things like bigger hit boxes on the grapple targets so they're easier to click on, and a keyboard shortcut to restart the level (or just automatically restart when you die), but those are just little nit picks.
All in all really well done. With a bit of visual polish this could be released!