Retreat to aid Petra

“Gaww DAMNIT!” you yell as you turn heel to run over to Petra. The orc begins to **** Petra with one hand just as you reach him. His attention is entirely focused on her as you bring your weapon down on his head. You hear a satisfying CRACK as he slumps to the ground. Petra pries his fingers off her neck as she looks up at you thankfully. Her eyes turn to fear as she casts another spell. A vibrant light flashes behind you. An orc stands behind you, weapon raised but blinded from her spell. You bring your mace up connecting with his jaw as you push him over with a shield bash.

Krest has been pushed back to the edge of camp as three more orcs stand between you and him. Coming up the hill is another orc dressed in furs with a bear skin cloak. He wields a gnarled wooden staff which makes obvious the fact he’s a shaman. Likely the same shaman that ended Petra’s blinding spell. His magical ability makes him a dangerous opponent, and likely one well worth killing. Though presently he just seems to be observing how the fight progresses with particular interest in the fighting style of Krest. Krest is currently fending off three orcs on his own and could probably use an assist if you opt not to battle the shaman. How can you end this fight quickly?