After playing this split screen co-op, I swear, this game can hear people talk.
On level with the train as the safehouse, we decided that the safehouse would be our fallback in case of horde, since the train yard so open. 10 seconds after we step off the train, cue tank music. We all haul back to the safehouse, thinking the tank wouldn't be able to fit in the door. We all get in, and see the tank coming. We all open up on the tank, thinking we're safe. Tank freaking busts through the door, into the train, we all die.
On the level with the boat finale...
After we cleared the inital neighborhood portion and started to move towards the woods, there's the big clearning. No one was in the clearning for some reason that time, and my friend says "No one is here... I don't like it. On three, leets just haul ass arcoss this field." He counts off, and I am the first to run. As soon as I take a step past the fence, a

ing hunter pounces on me.
And numberous other experiences.