Tf2 is amazing, I haven't played a game this fun online since the original modern warfare. The campaign is also fantastic with some really cool and unique mechanics. I think the highlight of the campaign to me was the bond that is formed between Jack Cooper and BT as time goes on. Even tho it's simple with only 2 dialogue options, the speech response system in the campaign is a real treat as well. It's very basic but it allows you to respond in your own way instead of just listening to your character speak a single response on his own without any input from the player.