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This guide was last updated for version: 1.4.4.004
Polterghast is usually the seventh Post-Moon Lord boss that you will face in your playthrough. Polterghast is summoned by using the Necroplasmic Beacon in the Dungeon at any time. Additionally, if Polterghast is not yet defeated in a world, it will spawn naturally after killing 30 Phantom Spirits.
Terrain Preparation[edit | edit source]
A large, spacious area in the Dungeon should be cleared out with plenty of room to move. The arena should not have any places where you can get stuck; the floor and walls should be flat. Zen Potions help immensely while building the arena by preventing enemy spawns.
Alternatively, one can use Dungeon Walls Unsafe purchased from the Clothier in order to create a controlled arena.
Gearing Up[edit | edit source]
Armor[edit | edit source]
Tarragon armor is the preferred choice for all classes; however, Lunar armors can still be effective if the player is adept with Polterghast's behavior.
- Solar Flare armor for Melee
- Vortex armor for Ranged
- Nebula armor for Mage
- Stardust armor for Summoner
- Xeroc armor for Rogue
Accessories[edit | edit source]
- Tarragon Wings (with Angel Treads) or Seraph Tracers are the preferred wings.
- The Elysian Aegis or the Statis' Ninja Belt allow the player to make sharp turns and are very useful.
- The Elysian Aegis additionally gives knockback immunity and many defensive boosts.
- Statis' Ninja Belt additionally provides the chance of a ninja dodge and increased jump acceleration.
- The Absorber is important for survivability by increasing damage reduction as well as giving increased jump acceleration.
- The Community is a great all around accessory that boosts offensive and defensive stats as well as boosting flight time.
- The Heart of the Elements provides many all-around boosts including damage, damage reduction, life regen, and jump acceleration.
- The Astral Arcanum is a great option giving a chance to nullify projectile damage.
- Melee players should use the Bloody Worm Scarf for its strong melee boosts as well as increased damage reduction.
- Ranged players should use the Sniper Scope and Artemis Emblem, which both help in boosting damage output.
- The Artemis Emblem additionally gives some life regen and ammo conservation.
- Magic players should use the Sigil of Calamitas for its strong magic boosts.
- Summoners can boost their minion count and damage with the Star-Tainted Generator and Statis' Curse.
- Summoners can also use the Profaned Soul Artifact to provide a direct DPS boost through other minions.
- The Dark God's Sheath can be a good accessory for Rogue players, provided they can gain stealth to perform stealth strikes.
- It also provides several passive Rogue bonuses.
Weapons[edit | edit source]
Melee[edit | edit source]
- The True Tyrant's Ultisword's high DPS should make the fight fairly straight-forward for Melee users, as the short range is mitigated by Polterghast generally staying close to the player.
- The Mirror Blade is another option with good DPS provided that you have good aim.
- The Lacerator is a strong option that additionally provides a bit of healing to the player.
- The Mutilator, Holy Collider, and Stellar Striker are risky options that deal great damage at the cost of losing lots of health.
Ranged[edit | edit source]
- The Seadragon or Storm Dragoon are strong options that deal great DPS.
- The Storm is another option that has comparable DPS.
- The Spyker is a solid pick, dealing high damage with its explosion effects.
- The Blissful Bombardier does excellent damage as well as having homing projectiles.
- The Nettlevine Greatbow is a powerful option that can be utilized throughout the entire fight when paired with Elysian Arrows.
Mage[edit | edit source]
- The Sanguine Flare and Mistlestorm are excellent choices that deal high damage to Polterghast.
- Viscera is a lower DPS option, but it greatly increases survivability with its healing.
- The Elemental Ray is a decent choice, dealing good damage to Polterghast.
- The Ultra Liquidator is an excellent secondary weapon for applying Ichor for long periods of time.
- The Divine Retribution can decimate the Polterghast and also acts as a homing option.
Summoner[edit | edit source]
- Cosmilamps should be utilized primarily for the immense damage being able to handle both the Polterghast.
- The Energy Staff provides additional DPS to aid the player's minions.
Rogue[edit | edit source]
- The Cosmic Kunai is a strong option that deals excellent damage although it can be a bit risky.
- Molten Amputators are another option that deal great DPS if Polterghast is lead through the boomerangs.
- The Shattered Sun is a great option with its homing.
Miscellaneous[edit | edit source]
- The Well Fed buff provides a useful all around stat boost.
- Farm Blood Orbs to easily craft many helpful potions that will increase your survivability.
The Fight[edit | edit source]
Polterghast will spawn off-screen, meaning you should be prepared to dodge the Polterghast as it approaches you. Polterghast has 3 phases.
Phase 1 should be largely treated like Plantera. Slowly circle Polterghast and watch out for the hooks and bouncing projectiles.
At 75% health, Polterghast transforms into Necroghast (Phase 2). The hooks no longer deal contact damage, but instead they occasionally shoot at you. Necroghast's projectiles are now red, faster, and deal more damage. Continue circling the boss in this phase.
At 33% / 50%, Necroghast transforms into Necroplasm (Phase 3). It is highly recommended to use a weapon that inflicts Ichor in this phase such as Everglade Spray or the Golden Gun. At the start of this phase, Necroplasm immediately summons a clone. While this clone is alive, Necroplasm's damage reduction is increased by 30%, drastically reducing the damage it takes. Additionally, Phantoms begin to revolve around the player. At set intervals, they release Spirit orbs that can deal a lot of damage. It is important to keep an eye on when they shoot, so as to not get caught off guard. Unlike prior phases, circling is much less effective in this phase. Walking away slowly tends to work the best although very wide circles can work as well. Occasionally, the clone will make very fast lunges toward the player. Necroplasm can also do this. It is important to always keep moving and be ready to teleport with the Rod of Discord or Normality Relocator. When reaching 20% / 33% health, Necroplasm begins to occasionally summon Happy Phantom Spirits. Up to 3 can be summoned at a time. As long as you keep moving, they typically do not pose too much of a threat. Utilizing their Banner can minimize the threat they pose.
Be careful not to enter the Surface as it will cause Polterghast to enrage. When enraged, Polterghast gains a massive boost in speed, damage, projectile speed and fire rate, and damage reduction.
General Tips[edit | edit source]
- The Normality Relocator is a very strong tool as it allows instantaneous teleportation.
- Be wary while teleporting, as the player will fall at a much greater pace due to the Normality Relocator's effects.
- In Revengeance or Death Mode, Rage and Adrenaline can be used effectively to deal with the Polterghast Clone that spawns in Phase 3.
- In Revengeance or Death Mode, the Horror debuff can be prevented with Margarita or Laudanum.