Got this from n4g.com
"You keep him busy while I pop back for that launcher we saw earlier."
"Though flawed, your democratic culture is, on consideration, preferable to the totalitarian hellhole that is my own. I want to defect."
"I wish you wouldn't talk so loudly. You're making our position very obvious."
"I just shot him five times in the head and he didn't die. Stupid host advantage."
"I suggest we don't stand with our back to the door."
"My wife gave birth today, you unfeeling monster."
"Interesting fact: if you jog sideways and jump while you're shooting, you're much less likely to get shot in the head."
"He'll regret wasting those rockets on us when the juggernauts get here. What a n00b."
"Let's all hide under the corpses of our recently slain comrades, then shoot him as he's leaving."
"Cease this madness! They want us to hate one another, but really, we are brothers."
"Those soldiers he's with are indestructible. Perhaps if we stun one we can use him as cover."
"Hey, rather than trying to hold this area by ourselves, why don't we fall back and team up with the guys in the room along?"
"Elementary, my dear Watson. Using my built-in triangulation system, and despite thick undergrowth, fog and night time conditions, I can determine exactly where that suppressed sniper bullet came from."
"Seeing as that guy died popping his head out of cover at precisely that spot, I will now refrain from doing exactly the same."
"Watch out. The bastard's using auto-aim."
"I wonder if you're alert to the irony of waging war to preserve world peace."
"You totally stole my kill, dude."
"OK, the music's started. Places, everyone."
"You know, I could have sworn I heard a bunch of people get shot round the corner, probably just my imagination."
"I seem to have run out of ammo."
"If we must have all these volatile oil drums right by our positions, let's at least stack them by the area entrance."