As of the recording of this video the deathless rewards were broken, it should be fixed now so don’t worry. I’m just gonna beat it deathless again since it’s honestly not that hard and I’ve learned new strats
It’s honestly just memorizing the patterns, a couple things to know is that his dashes don’t do damage his punches do. So if you can’t make distance walking towards his dash can sometimes save you some health. You can also play risky for extra damage during his phase 1 blaster attack as well as after French fries ends. But honestly just learn the pattern since it’s always consistent and then use dark heart sustain to last through the fight