Sniper ftw, I especially aim for the medics on the opposing team, I can't let them get any ubers. (always the most fun to headshot a medic right before the gates open on dustbowl). Spies used to bother me, but once I start running around smacking the air with my machete, they tend to stay away.
well, when I started playing TF2 the first class I used was engineer and I love it! but I wanted to learn how to play with other classes so I'm using demoman, heavy, medic and sniper.