All you need is divine confetti and the anti air deathblow skill which can be retrieved in dilapitated temple area. Easy kill every time he jumps store.playstat...
There’s a skill to get from the shopkeeper dude at spawn, it’s called anti air deathblow. When you get that, you can jump up to an enemy who’s also jumped up and do an insta deathblow on them. (Doesn’t work on main bosses).