Have I ever cheated?
Yes, but never in competitive gaming, as in evryone was ok with it.
Have I ever teamkilled?
Only if it's some total asshole or for fun with some friends. (Possibly also by mistake)
Have I ever ragequit?
Depends on what you mean with rage quiting, if being raped by 5 scouts using the Force-a-Nature on TF 2, complaining with crude langauge and then quiting counts, yes I have.
Have I ever mic spammed?
People complain about that I DON'T use my mic.
Have I ever griefed?
Not sure what that word means, but if it's like complaining about your team, yes I have but mostly not right in their faces.
Have I ever spawnkilled?
Mostly just on assholes or in really silly moments. Possibly even by mistake.
Have I ever camped?
Yeeeeeeeees but not on games where it's really a sin. (Like TF 2.)