Use summoned creatures to take some of the heat off.
Close with ranged enemies as quick as possible..the flying front roll is perfect for evading enemy fire and quickly getting into the middle of the fight.
Whirlwind is perfect for these situations.
Also use strength and dexterity potions etc, before starting the fight. A sudden jump of 10 strength or more can really even the odds. And they usually last long enough for a prolonged fight.
Run away if necessary and take cover...a few seconds behind a tree or rock or other obstruction will force them to come to you and give you breathing space.
You can also lure a few out at a time...just get close enough to where their health bars and names appear and they will see you also...good for pulling down outlying patrols without alerting the rest of the pack.
Use a bow even if it isn't your part of your build...you can still do some serious damage before they close in.