I like the level itself, it feels fun to navigate.
I think it's very important that the grapple mechanic feels smooth and satisfying to use in a game like this one. RIght now, there's a long pause between when I connect with the sticky pads and when I get flung.
Also, it would be nice to have a visual indicator for when I'm in range of a sticky pad, for example by highlighting the pad when aiming at it while in range.
I thought the mechanic of refilling the sticky hand in the puddles was clear, though it took me some time before I realised that I started without any "sticky juice".
One final thing, giving the level geometry some colour or texture really helps with visibility.