Spawn Rusher
In FPS people run into your spawn piont, with an overpowered weapon i.e. a silenced UMP. Spraying and killing half your team in one go, before anyone is able to react.
The classic Spawn Rusher
These people would use a UMP weapon, or any submachine gun.
Perk1 marathon,
Perk2 lightweigth (because they are),
Perk3 Ninja