Really awesome, but needed a singleplayer to make it the best.
Its awesome how you are able to choose from many weapons including an AK-47, an MP5, and many others, but it also allows you take your enemies (or even allies) weapons off the floor if you are trying a gun for the first time, or you don't have enough money to buy a better weapon.
The money was a great part of it, but it really ticks you off when you don't have enough to buy your favorite weapon. The money system is good because you don't just get for killing, but also for completing objectives.
The many objectives within the game allow you to have endless hours of fun, at a non-stop rate. Every round is different then the next. Although, it gets quite annoying when you're shooting at someone for like 5 minutes, then a friend comes out and takes the winning shot.
This game should have had also had a singleplayer mode for all the people that like to just shoot people without someone else pop out and shoot you.
Very nice game overall, with one major error. Valve is doing a great job with games.