Who doesn't like to swing on a grappling hook?
The fast movement made me feel fragile, but it was somehow balanced out with the wall jump and grappling hook abilities that often saved me. I am not an expert in these kind of games and usually I don't have the nerves, but this one actually hit the spot perfectly for me - just a moment before I wanted to give up I was able to beat the last level. So hats down (fedora, of course) for the level design.
Nice job!