That was incredible! I really enjoyed the whole experience. The graphics were spot on and really gave the game a nice atmosphere. Good use of lighting, and the shiny material of the purple goo zombies stood out. The audio fit quite well, though the footstep sound got a little tiresome by the end.
Aiming was pretty challenging, and probably could have benefited from the angle of the barrel matching up better with the direction the character is shooting or something. It just felt a bit off the whole time. It would have also been nice to be able to move a bit faster.
Nice subtle use of the colossal creature and overgrown wildcards as well. :)