In my copy of the game the enemies and the knife are invisible. http://imgur.com/Ti7Sogj I tried reinstalling both versions of the game but the problem persists. I'm running it on an old thinkpad tough so it might be a hardware problem. I managed to finish the level by just sprinting through.
Apart from that, movement and shooting feel good. I expecially like the starting gun. Great job!
At least you could run around for a while, thanks for trying it out all the same!
Every time something like that has happened before it's from the computer not supporting a high enough OpenGL version, but I've made sure to only use the bare minimum 3.0 spec to get the best compatibility. It could simply be an outdated driver, because if your device really can't support OpenGL 3.0 then it shouldn't be able to draw anything but the UI. Try getting the latest drivers and see if they show up.
