It's the principle of the thing!
Let off a few bursts in the direction of the Fiend leader.
2 + 1: You shoot at the Fiend leader. This just only seems to piss her off. You ARE pretty sure you hit. Damn VATS.
"Uh..."
Quick! Run like hell!
4: You scramble away just in time for the grenade to land and make a crater where you originally were. Phew.
"Good luck everyone!"
Grab some expensive goods and run!
5: You somehow managed to drag the entire wagon off into the sunset while everybody is busy shooting. Newlin is suddenly without cover.
"Gosh darnit, everyone cut the damn shooting shit! No one's gonna make it out alright you freaking idiots!"
Chase after Mister Jensen and wrestle the grenade launcher from his inexperienced hands, that is, if I can even catch up to him.
3 - 1: Your legs aren't what they used to be, not to mention that you had to backpedal away from the explosion. At least you weren't harmed.
Scream like a banshee and give the nearest Fiend a firehug.
2: The Fiend sways away and you land with a thud on the ground. Somehow that hurts more than being on fire, but then again, everyone on the wasteland is good at shooting at people while they are getting set on fire.
Punch the head Fiend in the face.
5: You suddenly come out of nowhere beside the Fiend leader and engage in old-fashioned fisticuffs. Your uppercut sends her flying, dropping her plasma rifle.
"Ooof!"sneak around and break a fiend's neck. Then take that fiend's gun, and shoot another fiend
4: You sneak up behind a Fiend. No small task, seeing as he's shooting everywhere, but then again he's stoned out of his mind. You bend his head sideways quickly and hear a sickening crunch.
3: You pick up the plasma rifle and shoot at one of the Fiends left standing. In a moment of drug-induced hypercompetence, the Fiend shot out your plasma pellet with his own. The plasma collided in the air and exploded into hopefully safe fireworks. The Fiend gawped at the explosion for a moment before taking aim at you.