One recent event, and one old one - both multiplayer:
The recent event played out on a Battle mode server with 5'ish people per team. The end of a match came down to me (archer) vs one enemy infantry, and one enemy archer. I killed the infantry player in melee, but was very low health and getting peppered with arrows. I grabbed the infantry player's Huscarl Shield, and approached the archer to melee. The problem? I hadn't noticed that it dropped my sword (rather than arrows) to pick up the shield. Not wanting to use fists against a sword, I started backpedaling to look for my weapon - with my opponent attacking my shield the entire time.
In an attempt to buy the precious seconds needed to grab the weapon from the ground, I kicked my opponent. My kick was poorly timed, however, and landed at the same time as one of his melee swings - and we both dropped dead at the same time. (I suppose I wasn't the only one with low health
)
The older incident happened fairly early in beta, during a version where horses (including riderless ones) had extremely high charge-damage values. I was playing infantry on the ruins map, and attempting to protect two friendly archers near the rocks by village spawn. What I didn't think to protect them from, was a horse who'd lost its rider. While I had my back turned to the pair of friendlies, I heard two simultaneous thuds and screams - while also seeing two lines of "X has been killed by Hunter." For a second, I actually thought there was a player named Hunter that had killed them - but checking the scoreboard, along with exclamations of "LOL!" killed that theory.