Most games have a crouch. This game has a crawl, which I appreciate. Although you still make footsteps while crawling. Hmm...
EDIT: I've finished the game now. A couple of bugs and other problems I ran into. First, the framerate drops to a crawl in the greenhouse. But the second problem was actually much bigger. Potential spoilers, but once I got past the server room and to the message terminal before the final console, the one with the floppy disc labeled "Access Codes" next to it on the desk, the game kind of glitched out. The sound stuttered and "hung" for a moment and then returned to normal. However, my screen just stayed frozen. My computer was not locked up. I could alt-tab to my desktop. But in the game I could still push movement keys and the flashlight and I could hear myself walking and clicking the flashlight on and off, but the screen was still frozen at the terminal. Pressing ESC apparently brought up the menu because moving my mouse I could hear the tones of mousing over the menu options, but again the screen still showed the terminal. I had to force close the game and restart and unfortunately it doesn't seem like the game has any support for saves at all so I had to start over again. This bug did not occur the second time through.