I did a full play-through on PC in Survival mode, only because I Was able to add Fast Travel back into the game with a mod.
The rest I never cared about, but Fast travel was 100% needed.
I am still blown away by the differences in the game between the two systems.
One of the big things that really scared the shit out of me, was I was revisiting the Corvega Plant to get the Repair bobblehead. (I had cleared the interior out about 10 levels ago).
so I am slowly making my way down the street towards the ramp that leads to the roof. Sniping everything I can, using Piper to provide cover for the runners that try to charge you. When all of a sudden I get nuked, seriously I was nuked by a Fat Man. I had no idea what the hell was going on, when as I lay there being a rag doll, I can just make out off on a rooftop in College Square (Is it College Square thats to the east of Corvega? I can't remember the name) Is a Raider in Power Armor toting a Fat Man.... Dude was at just over the range of my Hunting Rifle with a Medium Scope (I want to say the range is 217m on it)
I have no idea how I triggered the Raider, but he killed me a few more times before I was able to shoot and scoot enough to kill him, and recover all of it.
Not once has there ever been a raider with a Fat Man, let alone Power Armor, near Corvega.
The Ps4 seems to want you to get heavy weapons early and often. I am at a point where I am sitting on 3 Miniguns at different settlements, and I sell the others I find. I am only level 14, which is what blows my mind. I treat the Fat Man launcher the same way. Oddly I haven't seen a single missile launcher though.