So I have a lot to say one your game : a lot of positive things but some negative points too.
Let's start with the negative points. So first of all, the luminosity is awful xD. But don't worry that's not a big deal. In fact sometimes I fell in the void or I was just lost because I couldn't see where was the hole or where was the path. It's really dark sometimes. The second negative point is the physics. Jumping is really hard, sometimes we go really far away from where we cant, sometimes we don't move at all. That's maybe due to the low air control.
But your game is so cool! The shooting mechanic works well, the scene at the start is cool.
Really a great game!