Whats the best armour and weapon to kill Arachne's Keeper?

[JetFlip09]

^ Title ^
also i am currently using:
- Spicy Raider Axe (Bane of arthropods V, Critical V, First Strike IV, and Lifesteal III)
- Full Hardened Armour set (Growth V, Protection V)
But this doesnt seem to work cuz Either its skill issue or theres just too many spiders crawling my ah..
my networth is probs around 900k

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