Really good!! It feels like a more puzzley Hotline Miami, which I really like. The art is good and throwing lances through more than one enemy is very satisfactory :D
This is not related to the game, but I do wonder why you called it "Darkest Deal" when the deal part is only present at the beginning. It seems to me it should be called something more related to the gameplay, right?
But the game is really good :) Well done!