Hard to go wrong with a grappling hook in game, it was fun! Having the green tiles as a guide in the tutorial is something I think you could have kept going throughout the game, at least in some form (maybe an arrow pointing towards the goal?).
I had some amount of trouble getting my momentum up or figuring out where to go which felt the opposite of what the smooth, fluid gameplay that you usually look for with a swinging/grappling hook mechanic.
Nice work!