Really interesting mechanic, well designed. A platformer purely based on arc movement is rare, and the controls are really tight. You can always predict how you move and where you'll grapple; timing is what's being tested. There wasn't any crazy momentum, so you are in control of where you go. As the game stands now, there's just one level which serves more as a mechanic demo than anything, but this could definitely be expanded with progression elements to involve more puzzle or execution elements, and some progression in difficulty - that, or it could incentivize speedrunning and clean play. Lots of potential here; the base controls feel really good.