I just played the game - congratulations, it has plenty of potential. I really like the way it's going.
My only real problem is that my second game, out of the 2 I've played so far, crashed very suddenly as I was racing up an explored room. This means I also raced through the error messages.
I kept a back-up of the post-crash game, in case there's any debug tool I'm unaware of.
Regarding the game itself, sidearms seem quite superior to the main weapon, at least as far as I've played. There's nearly no ammo waste and the Colt comes into play early, bringing most foes down very quickly. It's very annoying, however, having to trace down one of the first pistol (I forgot its name) once .44 runs out, knowing what a small object it is, real-life. Any chance of adding a "secondary sidearm" slot?