Just found the worst fight ever (if you have wrong weapon). Story time:
So I'm messing around underground (Deeproot Depths). Come across Crucible Knight Siluria. Whooped his ass first try. Feeling beastly

. Decide to go find this sorcerer that's in Caelid. Find the hideaway, go through it, get all my loot. At the boss room. Multiple messages saying 'try strike'. fukk a strike. I don't need no strike

. Go in with dual katanas (been messing with Blood Nagakiba with Bloodhound Step in RH, Rivers of Blood in LH).
Boss? 3 of them Crystalians

. And they proc Rot

. My Katanas? Yeah, I might as well have been trying to kick them to death. They do shyt

. I have one strike weapon on me, and it's unleveled Hoslow's Whip

. I threw myself in there trying to figure something out, and nothing's working. (I actually used Mimic Ashe

to pull aggro to see if I could kill one with only backstabs. Not happening)

.
I exit stage left

. Go to Roundtable. Check my storehouse for a strike weapon. Morning Star

. Took 10 minutes to get runes, buy stones and level it as much as I could (+18). Go back. Oh, you bytches wanna play, let's play

. Walked in there and decimated them first try

.
Moral of the story: fukk From for putting them dumb ass enemies in the game, then making you fight them with a specific weapon type

.