A very good game! The core mechanic is quite interesting, forcing you to learn how to use physics to deliver the character to the target. The graphics and sound are also great. However, I found the controls to be very uncomfortable.
In my opinion, using the UP key for jumping is a major faux pas. I also don’t understand why mouse buttons are used in the controls when there’s no cursor involved.
I believe the optimal control scheme would be something along these lines: remove jump action as unnecessary; hold SPACE to attach to the nearest point; use W and S to adjust the rope length; use A and D to swing while roped; and use SHIFT for a powerful jump while attached. With such a setup, the controls would become much simpler and more intuitive, in my view.