The steps to getting quickscopes for scout:
1. Equip Pistol
2. Go Fast
3. Do a 360 degree turn while middair jumping, then kill every one with one single shot.

Soldier has a much more leet technique. 1rd you must equip The Direct hit, The B.A.S.E Jumper, and The Half-Zatoichi.
All you actually need is the direct hit to be the best player ever. First stand motionless next to a wall and shoot the wall. Then spam M1 and pray for a kill.

For these classes, the strats are the same (Im DEFINITELY not too lazy to make them individually).
First, take your melee, then run at people and hold M1. If you take any damadge, run all the way back to the resupply cabinets and repeat.

Build a L1 sentry and wrangle it all the way across the map.

Finally, the most leet class.
First you must position yourself behind a window so the enemy will never see it coming. Then do a 360 scope in and aim 10 ft above thier heads. Don't forget to equip the best sniper rifle: the machina. The machina is proven leet because the only way to shoot is quickscopes.