Well, I managed to win with 8 Frisian spearmen and 19 villagers. Had to lower my,own damage to easiest and that of my troops to easy. BTW, how does changing battle and campaign AI in settings affect gameplay? I have it both set at good. Should I change it? Never played much Warband/Brytenwalda thus I wouldn't know.
I ordered my troops to follow me. Then I ran away from the enemy towards the hills. When my troops gathered at the foot of the hills (don't know why they didn't want to follow me all the way up?) I ordered that to stand ground and go closer. Disorganised enemy plunged into us but eventually all died. I managed to kill around 3 of them if I'm not mistaken.
Told that stupid companion of mine who brought me to Frisian rebels that I basically abused his thrust 'cos I don't wanna have a liability that he is amongs us. Hope that was a right choice. :/