A highly simple but highly fun game with a pretty good difficulty level the difficulty level of "Die and you're done, pack up your fucking bags and get the fuck outta the game asshole" Aka in short you die you're dead, make a new guy.

Pro's: Holy hat spam batman! Fun, Funny, Amusingly trolltastic, 2fort.
Con's: Haxors, Sticky Spam, Heavy Spam, Heavy + Medic Combo x 4 = Annoying, Some Peoples Tags, AutoBalance, Nooby teammates more common now.
Neutral: Pyro.

Pro's: Fun, Not insanely graphics intensive, MMO, Weapon Choices, Costume slots that armor can be worn in to look badass with good armor on underneath.
Con's: Enemies tend to get hard quick and bosses can be insane, Needs more hats mainly Fedora's.
Neutral: You get to pick your color and it tends to carry over to most equipment in some way.