This is the third day that I have Warband beta, this is my best deathmatch (on foot, with a Nord Veteran, no throwing axes, only War Spear against the Khergits and Great Axe against the Nords):
Mostly by dueling, though I did kill archers and axe throwers in the back. But they can't be more than 10-15 kills or so. Sometimes I was waiting for a duel to end when one of the duelists spot me and attacks me

. People don't trust others these days

. I was killed one time in a ridiculous way. I had bought the maximum armour of the veteran (banded armor, nordic helmet, scale gauntlets, whatever the best boots are), and I got killed from full hp with a single lance THRUST (not a couch)

. another deathmatch, with my best k-d rate (yesterday or the day before, I don't remember)
And yesterday (second day of play), I got a very decent score in a team deathmatch:
All the time playing as Vaegir Spearman there.
My other scores are usually ok (except for the first half hour I played, I really sucked then... The first thing I did in warband is spawning and IMMEDIATELY getting myself killed by a lancer

), but these are my best for now.