Im generally either a Ambusher or tactician. Ive been known to hide and jump out or tactically defend points and my team in games such as...
Cod (ACR or SCAR-H with silencer and M9 FMJ, I generally defend the flag/domination points/demoliton bombs and ambush people who come near. This is especially funny when theres two of them, I kill one and because im well hid the other enemy just looks around confused)
TF2 (I generally use pyro to stop a team rush on maps like dustbowl, I may noy get many kills with it, but I either get assists or force a retreat, Its liokle an air strike in stragety games. OR I spy and stab the medic of an heavy medic team, then calling an ambush on the heavy)
Ive also been the guy who sometimes rushes levels and fails (L4d, peace walker etc)