We need some epic stories from our experiences. Here's mine, both on extreme:
1) So we're doing the apartments and near the end I jump on the alarm car by accident and I die on the subway stair well and 2 of my friends run ahead to the safe room. Another one picks me up as I protect him from the ground. I walk 2 steps and Apparently one of my friends accidentally closed the safe room door in the face of the other oneso he died right in front of the door. Now the door won't open except for a very little tiny crack as my friend from the inside is trying to get the zombies off of my friend and more zombies are on mine and my 3rd friend's backs as we're trying to get in. Eventually we end up killing the guy blocking the door so we can get to safety. Fun all around.
2) This one just happened a few minutes ago. We're at the end right before the switch so I set up one gas tank near the closer turbines. Once set up I flip the switch and run back and then I shoot the gas tank. Seems I overestimated the gas tank cause it spreads to the minigun and ends up killing the guy there, and the other one gets dragged into it by a smoker. Meanwhile I'm guarding the whole and I throw a pipe bomb down the hole and see 4 zombies run through the fire and while on fire jump after the pipe bomb. Talk about going from the fire into the bomb. So now it's just me and another friend alive on a clear way towards the end. As we're running I lag behind because I had 1 health. So I hear a boomer and my friend gets vomited on 5 feet in front of the door and dies right there. When I get up the stairs I see him surrounded by 10 or so zombies and while I manage to shoot some off I make another executive decision. I run over to him and jump over him as I shoot him with my shotgun, which accidentally sets off the 2nd gas barrel which is right next to him, run into the safe room and close it. Soon he dies and we finish the game on Expert yet again.