I tried another fix if you want to try again
I could finally play it. Making player be able to throw another grapple in the middle of one would benefit this game a lot and with some platforms actually crumble before you reach them would make the game more challenging. With these 2 changes the upgrade system actually makes more sense too. In current version there is no point giving points to speed other than making gameplay faster. Which was also still slow even if I spent 10 points in it.
Game was already fun to play and add more challenge to the game and you have a nice game loop.