Two:
Playing the Airport campain on L4D (name escapes me at the moment).
I was playing on expert, we defended whilst waiting for the plane. Plane arrives and I'm in pretty poor shape, but if I heal I risk slowing the team's departure down, making it harder to leave. I run to the plane with the FA pack in my hands, melee a couple of zombies out of my way and make it into the plane.
Little did I know that I was being followed by a tank who proceeded to come *inside* the plane with me, I had no-where to run. Weird thing was, he hit me once and left me. I may have survived if it wasn't for the boomer vomiting on me as well
I died, Louis died but the other two made it.
Playing No Mercy on L4D, going for the Unbreakable acheivement (no heals) with a bunch of bots. We make it through the final stage, I go down the stairs only for LouisBot to pin me in the corner of the stairwell and heal me... I fired a whole clip into him to get him to stop, but he wouldn't...