Having seen where this was in development just a couple of days ago, you got an impressive amount done in the interim. I really like the visual style. Understand it's referential to the titular artist, but it does make for a unique entry here. As someone who's not a huge fan of grapple mechanics in most games, I actually think it worked relatively well here. There's a bit of a stiffness to the movement when you're in the air, but that feels intentional to add to the overall challenge.
There is a point playing where it seemed like I had nowhere else to go, when in fact I had to use the momentum of the grapple to get to the next platform. On the one hand - a good way to increase the difficulty after getting used to the basic controls. But, I couldn't see the platform at all, even when jumping, so I initially thought I had reached the "end" of the stage. So some work on positioning may be needed there.
And in fact, I think I did reach the "end" at the 160s. This will probably be less of an issue if played in a live environment, but I did find myself wondering if there was anything else I could do with several seconds remaining. I ended up trying to time my momentum grapple jump to be at its peak right when the timer ended!