Oh man, many of skyrim's combat taunts come to mind after this.

-Never should have come here!
-You imperial bastards!
-Werent expecting that, were you?
-Hah, I think you're bleeding.

What ablut some snippets frpm that medieval fighting game called mordhau too?

-You do actually know how to use that thing?
-Dodge this you bastard!
-You shoot/swing well, but miss terribly!
-You wanna try that again sunshine?

If the code is advanced enough to make it work, allied pawns could talk to eachother during combat instead of taunting enemies, requesting assistance, revealing an enemy's position.

Anywho, could be some fun lines to add as easter eggs :P

"I don't care who they send I am not paying my taxes!"
"Can't we settle this like men? You know, with over overwhelming firepower?"
"I don't care about your sexual preference shut up and die quietly!"
"Killing you is full time job now."
"This is not a democracy, I have a gun so that means I'm in charge!"
"Nobody leaves, everybody dies! Except me, and maybe my friends."
"HA HA HA, I'm so high right now! Who are we fighting?"
"Hi I'm with the homeowners association, you're in violation of code 103, being on this planet."
"Screw you, I have the right bear arms! And also I like my guns so DON'T TOUCH THEM!"
"Get off my lawn!"
"Don't worry we come in peace, with the power of violence."
"I have bullets with your name on it! I hope your name is Chuck!"
"Please stop fighting, I'm going to miss my show!"

just some more suggestions.

-i'll be back.
-you do you
-last time i checked you aren't bulletproof
-(mumbling something incohearant)
-yes?
-son you done got a bounty on your head
-im to old for this ♥♥♥♥ (funnier the younger they are)
-all i said was hi?
-i can do this all day
-with every bullet i grow stronger
-cant i just offer you lunch instead?