Decided it is about time I got a demo out for you lot to have a play with so above is the complete first level.
Instructions in the readme.txt. If you don't have a decent graphics card, I'd suggest you turn the resolution down to 640x480 in the main menu. I've had success running the game on computers with built-in SiS cards like that.
If you get any strange artifacts on the screen, make sure you are not forcing anti-aliasing or ansiotropic filtering. [EDIT] You also need to ensure that your card is not set to force vsync off, although this is something I am working on.
Enjoy, come back and comment. There is no FireStar pick up on this level, so you'll have to wait until the next demo to play with that.