Father Gascoin - didn't know about music box which allows you to get so many free hits in. I picked waste of skin and fought him before cleric beast. Fun times were had

. On my second run through I just started he's way easier with molotov's and the music box.
Cleric Beast - not hard persay but he's a huge meatsponge for the first boss, I think he's harder than lost giant and taurus demon.
Martyr Logarius - very damaging, hard to get a hit in without being hit. Took me a good amount of tries, probably the most besides Father Gascoin. Also fuck the run to this boss, takes like 40 seconds.
Gehrman - tried to play against him with my two hand style Kirkhammer, was obvious that wouldn't work. Had to learn his attack animations and when to parry, the scythe did obscene damage but his scimitar or whatever didn't do so much. The fight feels wonky in balance, first phase felt the hardest. Fight is easier with the visceral attack runes.
Margret's Wet Nurse - not hard but I just hate fights where the boss is a sponge tank, especially where you die after almost beating them and then have to farm vials.
Ebrietas - hard fight that requires timing when dodging her "arcane missiles". Her moves are easy telegraphs but she hits super hard