F5 Berserk help

[iEatLasagna]

I use berserk for F5 but I keep dying, what should I do?

Skycrypt: https://sky.shiiyu.moe/stats/Threpar/Papaya

Pet: Blue Whale with Shelmet/ Wither skeleton with spooky cupcake

Weapons: 4* Withered FOT, 4* Fabled Livid Dagger, 5* Dirty Phantom Rod (for minibosses)

Healing: Wand of Restoration, Florid Zombie Sword

Notes: working on 5 starring armor


Notes: I don't die in boss fight so keep that in mind before answering

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