Thanks for the video. I admire your perseverance.
You mentioning that collecting the lights does nothing made me remember that I forgot to have the player go back to the level select when beating a level. The game keeps track of them there.
On combining jumping and hooking into a single button: That definitely won't happen. There's already a use for having them separate. Sometimes it's useful to throw the hook early while still holding the jump button. I also want to allow the player to just drop from the hook instead of jump which requires the second button.