i ended up somewhere outside, chapter 2 or something. I had all the guns already! :S Anyway, the gameplay sucks yes. Its pitty because the concept (HL in 2D) is not bad at all!
btw, i tried to make my own CS 2D once, using RA gfx. You had a buy menu, a guy to walk with ( you would see it from top, like RA, doh!) and you could shoot other guys. It also had bots, and they walked pretty well from place to place, anyway... that gameplay equals this game imo!