It's good for hardcore and casual gamers imo.. In the beta theres only 5 story levels.. But when going through the user created maps.. Some can be very hard and challeging and some can be quite easy and cool.
That's it, thats the beauty of it. It's an awesomely designed sandbox to just play in and have fun. Played it round a mates house the yesterday, fantastic
Rast would you mind letting go at least one of those sig images please?
I'm off to bed, but we should have a play some time. My old housemate has got really into it, I'll get him to join in. Have you played gmod zombie game, it's much better than the cs:s version.