The campaign has that one level everyone who's played it knows. One of the most creative levels in a modern game.
The multiplayer was so good the first 2-3 years after the game released. Then they started nerfing it a bunch and then some issue began with people DDOS'ing their servers.
Did they fix the servers yet? For a long while there it was nearly impossible to finish a multiplayer match, the servers were getting slammed with some kind of attack and rendered it basically unplayable. I would love to get back to some Frontier Defense...
The multiplayer was so good the first 2-3 years after the game released. Then they started nerfing it a bunch and then some issue began with people DDOS'ing their servers.