The gameplay is very smooth and it is very challenging! Because of the amount of entries, I will try to finish the game later, but here are my thoughts:
The SFX are simple but clean, the controls are simple but not easy, which has charm, also nice that they are physics based. Visuals and animations are also clean and simple.
The instructions are clear and they do a good job, the only thing is that the game can be very frustrating, which in my opinion is good, because it is possible but with learning to handle the hook.
Also the type of game (plattformer with puzzles) isn't something specially the theme "Exploration", but because you made the view hard for seeing the whole map and hided the items very good (the puzzles are awesome!), so you need to search for it, it is very good fitting to the game jam!
That being said, it is a simple concept with a challenging and clean gameplay!
Edit: I now se, that you can zoom in and out, what is good for the people who struggle with the view and want it to have it easier!