I was looking forward to this one and you did not disappoint!
I absolutely agree with what has already been said, they've identified some great points so I won't repeat anything I found similar as it's already been identified.
What would I change?
Firstly, the bats take forever to get to you. They start off at a reasonable speed, then they slow down. I end up waiting on a platform for a few seconds every other jump when I just want to move on.
I would love to see the sword having a space ability and the shield having an x ability. Any further additions to movement would be great as well to give some variety to what you can achieve.
Those are my only two thoughts on areas of improvement for the game. Otherwise, I love the art style, the comedy in the cutscene is great, fantastic concept pulled off brilliantly, very very good game. Absolutely loved it.