Alright, to all you newbs out there, READ THE INSTRUCTIONS!!!!!!!!!!! I can't say how many times I've seen people ask "how do i switch weapons???" or "why is everyone moving faster???" That's why there are instructions!!! (Tap spacebar to run, btw)
Also, stop complaining about lag. It's probably your problem, not the game's. If you are experiencing lag, follow this link:
http://www.pawnstudios.com/forum/viewtopic.php?f=5&t=116
Anyways, excellently crafted game. The only downside is lag, but as someone who's been playing this game for half a year, I don't complain anymore. Good ol' days, though...