Beautifull game.

The Blood splash on camera is too much i think.
Your game theme is not horror or Dooom 3, and this splash on camera is annoyaing and reduces visiblity during some seconds.
It' like playing mario galaxy and having splahes of blood on camera each time you kill a monster.

Why not trying green blood (turnable into red in options for mature people), and some coins each time you kill to purchase better weapons ?