Sorry that the answer took so long, had some issues with itch for some reason. I am not able to reply with a picture. Here are the stats and setup for the oneshotting issue that have:
HP:3794 MP:702 attack:424 def:214 Magic:298 Resistance:262 agility:296 luck:149
Minotaur Axe
Stone Gauntlets
Ocean Guards Helm
Hot Pants
expansive amulet