Paradoks: The whole way Larambo is presented. She starts as a supposedly fragile and scared character, which already looks hilarious at that point:
"-Please!" <performs a headshot> "-You don't have to do this!" <performs another headshot>
Then she turns into unstoppable killing machine, single handedly killing an army of thugs:
<chasing an army with a granade launcher> "-That's right! I'm coming for you!"
I agree that's a thing, but like I said it's a thing in any game about killing dudes that also tries to make the character feel human. Niko in GTA4 is just a poor, good guy immigrant wrapped up in a life of crime he can't escape... while he kills hundreds of innocent people indiscriminately. It's an action video game thing, I'm not gonna blame the writers for that.