Going past the clean visuals, the game picks from its predecessor the diversity of the way each class plays, and tweaks it to a level that makes each class easier to pick up, fun to play and diverse enough to offer a different experience from any other class.
This in turn prompts you to play a class the way it’s meant to be played – a Pyro for instance is a devastating force at close quarters. Send him in the open, however, and he’ll be sniper chow in no time. This compels you to set up ambushes in tight corridors when you play as a Pyro, which is exactly what the designers expect you to do.
Although most of you will have a favorite class, you’re likely to play more than just one class to suit the situation at hand. The reason for this (as I’ve already mentioned) is that each class fits a specific role and some roles aren’t really cut out for certain maps.
For instance, playing a Sniper in a close corridor battle is not advisable. I love playing the Sniper class, but if I had to get up close and personal, I'd opt to play as a Medic. Playing each class offers vastly different experiences, which is what most class-based shooters try fruitlessly to achieve – but Team Fortress 2 accomplishes effortlessly.
If you’re an online shooter hog and you miss this title, you’re missing out on the best multiplayer shooter of the year. While being extremely well-polished, Team Fortress 2 is high on the fun factor and is easily the best class-based shooter available today.
the game give a fresh look to FPS thats for sure. 
