Nice little platformer, lacks a bit of contrast in terms of identifying relevant elements in the game (f.e. the essence dropped is not visually obvious as a pick-up) so maybe a bit more context information is needed to understand what you are suposed to do.
Good control response and the physics on the shooting with the pushback are quite good. Shows a small jittering while moving horizontally, not sure if intentional, but looks a bit off.
Overall a nice game, and a very recognizable vampire character ;)