I did the Arcane build in Bloodborne and it was kind of interesting/powerful later on. For the first half of the game I had very little to work with, basically just Flamethrower and the mist sprayer or whatever it is. Once it finally hit its stride it was fun, but it was pretty boring for a while before that.
Bloodtinge firearm-only build was significantly more fun to play. You're pretty much scaling your main attack from the start. I think Reiterpallasch was the gun I used for the second half and it was pretty awesome. Never did a melee attack for the entire game IIRC.
Back in Dark Souls I spared the Giant Blacksmith and stuck to pyro and my giant blunt (Reinforced Club). Got the club at Divine +5 and the Pyro at Ascended +5 so I'm pretty much done with leveling things up. Got the Lordvessel placed and just need to knock off the five big bosses.
O&S fell on the first try and I feel like the rest is pretty much fait accompli at this point, but I'll probably do it anyway just to finish the task. We'll see if Four Kings is a problem.
Only real issue all game was losing all my Humanity finally when I was trying to break into Demon Ruins. Had like 15 of it built up over the whole game by playing super-carefully and using Humanity to heal in emergencies, now it's all poofed. Hopefully it wasn't making a huge difference in my resistances or anything, still a bummer.