I too commited my first murder this weekend; although I can't describe it in such dramatic prose as the OP. The wife and I (yeah, the missus plays too, she's a 'gamer girl'.) were approaching a barn. I was leading as I had a Winchester and she was unarmed due to having no magazines for her 1911. I edge out from the woodline, look to my left and see a crouched figure....my first thought as a take aim is it's a hopper zed and as I squeeze the trigger (well, press the mouse button but y'know what I mean) I realise it's another player..too late as the Winchester drops him with one shot. All he had was a hatchet but was out of range to be dangerous to us. It made me feel genuinely guilty to have dropped that guy. However, I put the universe back in balance by saving some random French guy who came running up to the two of us in a woodline yelling " 'Elp me, 'elp meeeee " on voice as he was being chased by a very persistant zed. I killed the zed and off he went with a "Merci, zank you". Had the missus and I chuckling for a while, just a bizarre thing to happen. I don't have the kill on sight mentality in this game and find the challenge in seeing how long I can survive with what I can find, I'm not into server hopping and getting all the shiny shooters and bling. If you act dangerous then I'll take you on but I won't drop you just because you are in my line of sight.