I freely admit as a long time Souls and From fan, I generally do my first play using the Monnlight Greatsword setup. I mean, its their signature weapon and been in every single game. But I also fuck around with other builds. In fact, yesterday I decided to try running three characters through the early part of the expansion (using prior knowledge to grab early Scadoosh shards and get some key graces for later).
First was the Lightning Gransax guy and he just tore through most everything, making it all the way to the Finger Church and initial Fissue graces in a little over two hours, even dropping an undead dragon on the way. At 70 Dex and 50 Faith, the weapon art was just one or two shotting nearly anything though lack of large group options hindered me in a couple places (as did my 30 Vit I can get away with in the base game). I can see some enemies (esp Mesmer) giving this character problems, but unlike my caster he can actually engage in close quarters fighting. Once I get a generic spear worked up with a couple expansion weapon arts, this will be a cake run.
Next it was dual weild arcane Dagger girl, who was admittedly hard in the base game, but fun and workable. Complete shitshow in the DLC, between all the point blank AEs and the virtual requirement of using a shield to avoid getting one or two shotted when you make even the slightest mistake. And I cannot even imagine getting in close to bosses or harder overland enemies with all the PB AEs they throw around and how froggy they are. Whips were sort of ok, but I had to go spear and shield so much I lost interest because I was basically just playing my lightning guy, but with Mohg's spear. This is definately hard mode because you are basically playing the naked katana meme, but with the short range of daggers and nothing I have seen in the expansion on my first run seems to be a real upgrade for Reduvia (which the character was built around). If Dancer Blades were not total ass, I would try to pivot to them, but even the most common hall trash seems stagger resistant in the DLC so power stancing daggers with quick rolls is really masochistic.
Finally, I busted out my Ruins Blade centered Unga Bunga guy, as my co op pal wants to do another paired run together. While not as killy or dominating as the Lightning guy, being able to simply hide behind a Finger Print Shield and counter/spam weapon art with impunity is laughably easy. The first Mausoleum boss everyone is complaining about hit the pavement in one try simply to guard counters. The overland undead dragon my lightning guy killed was dead before it knew what had happened. I generally put myself in the summon pool to get easy Rune Arcs, XP, and Erdleave mascara things when generally exploring, because I enjoy the co-op experience. But I had to refrain from that because people would literally pull me in to tank for them the instant I put my sign down. It was crazy and I gained so much XP being a rent a tank in three hours. This was good, because this character was the lowest level and also sitting at 30 Vit after beating the main game (had a lot of stats to cover base reqs for a number of weapons and END). Definitely the easy mode for this expansion, with maybe a couple bosses (Scadoosh Tree, Metyr, and maybe Pig Rider dude) likely to be an issue.