Yeah, I'm on PC, Steam locks you out of achievements on that save if you use dev console, so there's that, I wanted to 100% the bastard.
But there's no warrant it can't happen on consoles and you are screwed then. Even in Skyrim, I got stuck on the main quest, because a tripwire didn't snap, stayed there like a goddamn concrete string, and the hobo Blades guy in the sewers couldn't be escorted to the next checkpoint/script flag. TCL and AI pathfinding does not mix, luckily I had learnt my lesson by then with Bethesda games, and had 2352345346 saves, so I just fired up one before I entered the sewers, generating the level right that time.
I've spent so much time scrolling through devconsole solutions on Skyrim, it's not even remotely funny. Not to mention the goddamn dragon soul absorbing bug, where you had to go through a few lines to trigger it. Given it's a main gameplay feature, and the game throws those Cliffracers on steroids at you every 10 minutes, I wasn't a happy man.
And Fallout 4 is based on the same engine as Skyrim, so I won't even touch it until it's on sale with all the Dogmeat Ballistic Harness DLCs bundled.