Biggest strengths:
- The quake-like movement is awesome and it makes TF2's look like a Call of Duty clone
- Grenades, although annoying to many players, are pretty varied and useful, such as engineer's EMP grenade that destroys enemy buildings, or the classic concussion grenade that you can use to jump
Biggest weakness:
-The classes just aren't as well balanced, some of them like Pyro feel completely useless