Defiled Amygdalla can go fuck himself with a rusty spoon, and then take said spoon and fuck the guy who thought defiled dungeons were a great idea. I really really struggled with all the bosses until ROM, then I downed all of them but Cainhurst's boss with ease until I hit the defiled chalice for my platinum. That one and the final ptumarian one were pretty tough (and awesome). I absolutely adored Bloodborne, after I got over the initial "WTF is this?" shock of seeing it go from the goth horror to Lovecraft 2/3 of the way through, it became one of the greatest games ever for me.
I just broke down and bought the Old Hunters this week, and holy shit, I've just begun but it is pretty spectacular too. Putting it down in my stupid attempt to plat Dark Souls III, even though that one did not click with me like Bloodborne did (my first "souls" game). I can't wait to plat Hunters as well.