Valhalla Knight armor is another good option for summoners due to its huge defense and life regen boosts.

For summoners Spooky armor is also a great option.However, it has decreased survivability compared to Spectre armor. Mages may choose to instead use Brimflame armor because of its very powerful set bonus and damage boosts.For mage players, Spectre armor can be utilized in synchrony with Spectre Wings for high damage and lifesteal.Shroomite armor can also be used in tandem with the Hoverboard if the player prefers the slightly increased defense.For rangers, Plague Reaper armor is a good alternative due to the set bonus attack, which can easily shred the Plaguebringer Goliath when used well.See the vanilla changes for more details.For melee players, Beetle armor can be utilized for more damage reduction, although Calamity nerfs the reduction of the beetles from 45% to 30%.It also reduces damage taken from the Plague debuff.

Hydrothermic armor is an all around great option for all classes because of its various buffs to many things vanilla armors don't cover, such as max life and the set bonuses.

Note that while tedious to set up, platforms hammered into stairs will allow you to fall straight through them by holding the down key while falling, allowing for a faster fall which can be invaluable in this fight. It is recommended to space out your platforms by at least 30 blocks, as vertical mobility is very important when dodging PBG's dashes, and too many horizontal platforms will easily lead to getting caught by her dashes on your way down. Typically, you can reuse a Plantera arena for this effect. When making an arena, a large box is preferred over a long track-like arena, as both horizontal and vertical mobility will be very helpful.

Terraria rottenwood goliath