I really like the idea of this game. It is kind of like the game "Getting Over It" or "Jump King" but with a grapple hook - and that sounds awesome.
But as others have mentioned, it is quite buggy. Half the times you shoot the rope, it seems to get stuck in yourself. I also experienced I got launched across the map when I retracted the hook, ultimately falling to my death. I understand that the game should be difficult, but the difficulty should feel fair, and not be because of random bugs.
The level design looks good. The tutorial bit in the beginning was good. I see a lot of potential here.