I don't have much to say:
>Models were good.
>Enemies have so much HP compared to the ammo you get, running past them is easier and more effective
>Music was good.
>Enemies can walk through walls.
>Jumping is floaty and you can get caught on ledges
It needs work, but I would make it faster and enemies do more damage with the player doing more damage. It would add a bunch more risk and reward with ammo and making ammo actually useful.