Spy (6v6)
Overview
The spy is considered an offclass in the sixes metagame. As a low health class, the Spy is designed to get behind the enemy team and get a pick to turn the advantage in his teams favor. Most often, this pick is the enemy Demoman or Medic and the objective is to use or drop the opposing team's uber. The spy relies on the ability to be unexpected. Thus, it is rare to run a Spy more than once or twice during a full game. As a spy, there is often only one chance to get a pick on the opposing team, before the spy's cover is blown and it is thereafter expected. For a spy to be "worth it" he must pick the enemy Demoman, Medic, or (when applicable) Heavy. As it is often a Scout or Soldier that offclasses to Spy, a pick on an opposing Scout or Soldier (or any offclass besides Heavy and Engineer) would be considered a trade and not a pick and will often not create a sufficient advantage.
Strategies + Tips
-Always focus on the Medic. If you have to, pick the Demoman, but there is only one try when running a Spy. Make it worth it.
-Try to make sure that you time your attack as spy with your team. If you attack when the enemy team is preoccupied by your combos spam you have a much higher chance to get a pick.
-Be patient! Sometimes waiting for just a moment will give you the opening you need to get a pick, but don't wait too long or your opportunity might be lost.
-Be sure to walk backwards.
