Played a web version of the game for a bit. I like it a lot, gave me a vibes from my childhood era.
The only thing that was bothering me the whole time is the grapple hook. Although it`s a great mechanic I personally found it difficult to use.
I always had to position myself at a very specific angle to be able to grapple. If I mis (which I did a lot) then I am just hanging mid air for a second, unable to do anything, exposed and taking damage.
So while it`s a good mechanic I found it very punishing sometimes and I died a lot because of it. Was only able to go to mid B stage though, but will try to complete the whole thing for sure.
Good game, I can see that you have put a lot of work into it. I enjoyed it!