Left 4 Dead: Gemini Strain.

Chapter XIV: And the Whispers We Left Behind – Russell

Russ hated having to sneak around the back alleys. Not because he was some sort of brave hero, but because of the fact that it scared the shit out of him. He would rather know what's coming up then walk around the corner like he had just done and smacked into an infected. The two fell down, but Russ knew he had to hurry. He quickly scrambled onto his knees and smacked the already standing zombie in the knee with his makeshift melee weapon, causing it to fall again, then proceeded to rain blows down onto its head until he felt a reassuring crunch.
"Pretty hardcore Russ." Said Robert as he helped him up.
"Suck me Chino." Russell replied, "Shooting it would've attracted more."
"I was just saying, damn."
Russell wasn't normally this short, especially with his friends, but life has gotten pretty rough the last few days. He tapped the broken chair leg on the wall next to him, giving the all clear.
Adam and Latvia came around the corner.
"So much for stealth." Said Latvia.
Russell imagined slapping her on the back of her head.
"At least I can still keep violent acts under control, my mouth on the other hand..."
Suddenly he felt a hand on his shoulder.
"Calm down Russ." Said Adam. Russell looked down at his hands and noticed they were shaking. "Killing anything isn't an easy thing to do when you're looking it face to face."
"You're wrong. I just have to think of this like a computer game. Simple point and click interface."
With that the group continued to move in quiet, Robert taking the front with Latvia and Russell in the center; and Adam bringing up the rear.
It was rough for all of them to realize how easy killing had become. At one point Robert even looked down at his gun, repeating Russell's words in his head.
"Simple point-and-click...yeah, that's about right."