Ah, another grappling hook enjoyer, I see. While the controls and and physics of the hook were a little unintuitive, it didn't take long for me to get used to them. And once I did, I found it really easy to maneuver around the space. I found all the items in the first couple minutes except for the last leaf for the cat. I really searched for about 15 minutes. When I finally got it, I'm not even sure where it was. I just noticed that my objective had changed.
Still, I quite enjoyed the game. The environment was complex enough to allow an interesting space to fling myself through, while still remaining simple enough so as to not be cluttered. And the character illustrations are cute. Good job!