Good game :) It took a while to understand that hook works more like a short-length teleport. And then it becomes more fun. But I very much asking to give a player a space to mistake, it made me sad, when I need to restart the level when missed with a hook. Maybe, when you teleported by hook check the ground if the player in the air makes short slow-motion to get time to react on the nearest wall.

I have much to say to this game, because i see potential in it, but it has some issues. 

1. The game is too complicated too fast. By that i mean: Don't throw everything at the player at once, but rather introduce everything step-by-step. E.g. in the first level you could already have 1 grappling hook and you could have a little text that says: Look, here you can see how many times you can use the grappling hook. In level 2 you could introduce fruits, and in level 3 you could introduce breaking walls. Just introduce everything slowly.

2. I know: The wall being destroyed is the main mechanic of your game, but it's actually the thing i found the least fun. It's just frustrating and when it happens i think: "Oh, well, then let's restart". I would rather have wall climbing or the grappling hook as your main mechanic.

3. I noticed that the door is over the player rather than the other way around. Just a minor bug.

Other than that, this is a fun game  and i hope my critique didn't sound too harsh, i just wanted to say some things that could improve it. I hope that my feedback was maybe even useful, and it would be really nice if you could check out my submission too. Thanks! :)

Fun game! Finished all levels, it felt like you could cheat a lot of them tho by grappling through walls, either way enjoyed playing :)