I just got this game yesturday. Been bored out of my mind, and was actually nervous when I got this game. I was afraid it would have the same aim system crap that CSS has. Happily it did not.
My first impression was not so great, seeing as I was getting my ass handed to me every round by rockets. The gameplay is insane. You can play with 6 people and feel like your playing with 10 people. Bullets flying everywhere, people bouncing all over the place. It wasn't easy to adjust to right away. Thankfully they have enough classes you get to fool around with so your not completely bored or discouraged. It's really only a matter of finding the best class that fits you. Don't start out as a sniper like I did, sure it sounds fun, but in this game you rarely get the chance to snipe anyone. Plus all the maps I've seen feel to be to small for sniping as well.
But yea, it takes a few hours of playing to get use to it.
lol i have 40 hours as pyro and 6 or less of every thing else, its really fun, i forgot the server i played on, when no one was on we sprayed the entire map with our sprays, then a guy came in a sprayed over them with porno lol, very fun game, get it