I just lost the game.
On topic, I try to just neutralise whatever the biggest threat to the team is using whatever's available. I go for the full balls-of-steel approach, mind - taking out Goliaths and Leviathans in UT2004 on foot by using stealth and distractions to my advantage, for example, or just by using tactics that most randoms aren't used to (like jumping on top of a leviathan. I actually managed to get around 50% of my victims to GET OUT OF THE LEVIATHAN and try to shoot me off of it. They normally leave the server after having their own leviathan run them down and then start unleashing hell on their own side).
Essentially, I try to play as much like Rambo as I can.