Be sure that you only fight one of them at a time. Always sneak in and gank the archers first, or stay out of LOS of them.
Alternatively:
Make sure you have lots of friends/meatshields. The arrows and sword-swings can go after them. Gank the archers first, while your friends die. Then run around, finishing off the injured while avoid direct combat. Then fight folks one on one. Or come back with my friends to throw at them.
Disable first, kill later. If you stab someone in the foot, and they fall over, they lose. Maybe you have to stab everyone else in the foot before you have time to finish them off, but they can't chase you fast enough to team up against you, and fight pretty lousy while on the ground. Worse comes to worse, you can always kite them with throwing junk at them.
In fact, hitting anyone at all causes pain, dropping their accuracy. How easy it is to hit is incredibly important. I always go for Easy and Very Easy blows at the start, until the opponent is injured enough not to be immediately threatening.
Weapon skills are important. I'd say that every time an enemy takes a swing at you, you have a 5% chance of being injured enough for you to eventually die. This is cuts to the leg, cuts to your arms, stabs to the lungs, and of course the "oh, now you're dead" injuries to the head. And those chipped bones. I hate chipped bones. But the less your opponents can attack you, the better. They will get lucky. So be accurate and skilled enough to hit and disable them in a blow or two.
If you don't have Skill, I recommend getting a training weapon and beating the crud out of small or medium-sized woodland animals. They have to stay conscious, or it's now good, but pick a finger and swing at it over and over. Picture that, your hero of destiny swinging and trying to hit a monkey's third toe and only his third toe. Practice is good. Armor is easy to get now, so small to medium animals shouldn't be a threat. Same with werecreatures, most of the time. Don't be afraid to level up every skill you can for the stat bonuses.
Eventually you might become powerful enough (stat-wise) that becoming a vampire is worth-while. Get your friends, kill one, drink the blood.
My vampire adventurer runs around with a wooden stick beating everything unconscious with it, and then draining their blood. He is that good. You can eventually be like that. But be careful. Even my guys sneaks over to archers and kills them first. He's still only one arrow-to-the-noggin away from being permanently dead.