>>51211457I can answer this!
Number 1 is you're going to want to go Slowpoke along with a potion, CDR emblems, and Shellbell/Focus Sash -- in the early minute or so before you get your skill upgrades you'll want to use Slack Off as soon as the boss starts auto attacking you to help mitigate damage, once it gets you to half health pop your potion and repeat. The boss will only use a handful of skills after their auto attack phase before chomping on you again and when that happens your move and potion should be up to use again. I like to slowly make my way to the right of the screen and use the HP Berry for emergency situations if I get hit by a skill and am super low on HP. I hope this helps it just takes a bit of practice but its just like a dance each boss has set patterns so it's not entirely random
