Cool gameplay. I beat the game, and at the end i was already jumping like crazy. It's reminded me of rope gameplay in Worms
From a feedback perspective, I can tell you that, firstly, because the rope grapple is attached to the mouse click, you cannot always recover from a fall in many cases, as you need to click while the cursor is aimed at something, which can be a bit finicky. And second, you should always wait for the character to fall, in order to trigger the death and restart. This could be faster.
Yet, it's impressive that you created such a gameplay experience, which is already quite enjoyable