Nobody else wants to do this so I guess I'll do it.
Video of route (this is totally an intended ending)
Notes:
Normal intro
SPECIAL = 5 PER 10 END 9 AGI
Enter the "Change Appearance" tab then exit (gets you a pipboy)
Discover Sanctuary and then run south
Pick up the Buffout at the broken house
Discover the transit center then FT back to Sanctuary
Run East to Robots Disposal Facility
Pick up Fat Man, Fusion Core, Mini Nuke and Power Armor
FT to transit center then go to Nuka-World (kill guy)
PA clip the wall right in front of you
Run into the market and pick up supplies (Stims, Psycho, Med-X, Buffout, Frag Grenades, Nuka Cola Quantum and a Mini Nuke)
Speak with McKenzie Bridgeman to start the quest "Open Season"
Open pipboy and pick the Demolition Expert perk, then bind your weapons/chems
Run next to the Parlor and Dupe a Mini Nuke for the Fat Man (Have gun loaded, open a container, deposit all ammo. you now have no ammo on you but still one in the Fat Man)
Enter the Parlor and kill Mags/William (Doing these first because if you kill anyone else first, Mags will run out but William will remain inside) You'll need to pop psycho and toss two frags along with a nuke. Make sure you hit William with a frag to knock him out of his animation or else he will take no damage
Exit and dupe another Mini Nuke
Run to Fizztop Mountain and kill Nisha
Run back to kill Mason (pick up your Mini Nukes)
After killing Mason go back into the market
Kill the 4 raiders inside the market and then turn in the quest
Run to the power plant
Item hover up to the roof and push the button
Now you've totally beat the DLC!
If you're gonna complain about this not being the "real" ending then you can route raider questline yourself. I won't because settlements are the dumbest thing Bethesda ever created.