The game is short and sweet, the guns feel great, the perks feel different and they affect how you play and you can finish the whole game in your first run if you are good enough, my only complain about the game is that the boss doesn't change his pattern every time he shows up, you just empty 3-5 mags on his wall, dash in, kill him, no new gimmik, no new patterns, not even summoning different types of enemies