Funny story. I was ready to come on gaf with a lot to bitch about. I'm currently in the research building after beating Ludwig. Ludwig is the interesting part.
My character for the DLC was my main, who was sitting on NG+4. Making a longer story shorter, for some reason (maybe too much time away from the game and not reading about it much) I did not think the DLC scaled; like the chalice dungeons. So to make vanilla more challenging I was doing light armor runs. I started off the DLC in the same way wearing my fashionable noble dress, Arianna's shoes, a dusty hat, and white gloves. It was tough with the new DLC regulars but not crazy tough, until I got to Ludwig. He was a damn tear, having at least 4 one-shots on me forcing me to actually change my armor, where he still had 3 one-shots. I thought, this DLC is impossible!
Bird brain I am. Of course the DLC scales and I spent way too many hours beating Ludwig on NG+4. I watched a YT video of him on regular post beating him after I realized this and just laughed in horror of my mistake. I will have a lot to say about OH after I'm done and I'm late to it cause I barely have any time these days to play games. But damn if I didn't start things out with the most asinine line of thinking possible.
TLDR, thought I was playing on regular and cursing From staff for making an absolutely brutal DLC, yet was on NG+4.