My brother uses his xbox controller on the PC and has the LT mapped to what would be "Q" on my keyboard, he runs around tapping that button, so it reveals/spots everyone.
We also always create a private voice channel, which if we are on the same team, we make a separate squad, i use SQD Explosives, he uses Sqd Ammo, but the Voice communications works wonders, as the enemy gets mad when he knifes me, and I tell my brother that I was knifed, he turns around and obliterates the other guy and revives me. And he starts saying the chat box that we are cheating because there was no way my brother should have known where he is.
I hate having to tell teammates to stop camping and #%&*$# through the chat box, because I always get a nasty response.
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