Unlocking the Spiritborn, the premier new class in the Blizzard Entertainment expansion, requires owning the Diablo 4 Vessel of Hatred expansion and completing the prologue quest 'The Crossing' in Gea Kul. Unlike traditional hidden heroes or unlockable roster fighters found in titles like Space Marine 2, Diablo 4 handles its newest addition as a core expansion class rather than a secret collectible, though mastering its hidden mechanics, spirit guardians—Ashara, Gorilla, Eagle, Centipede—and paragon boards takes distinct progression steps. If you are looking to optimize your roster alongside titles with diverse mechanics, check out our guides on Squad Busters characters or check out Smite best skills and Subnautica 2 early unlocks for broader gaming progression strategies.
Verifying Expansion Access and Character Creation
To access the Spiritborn class, ensure your account has successfully purchased and installed the Vessel of Hatred expansion on your platform of choice (PC via Battle.net or Steam, Xbox Series X/S, or PlayStation 5). Once installed, launch the game and select 'Create Character'. The Spiritborn will be available as the sixth playable class option right alongside the Barbarian, Druid, Necromancer, Rogue, and Sorcerer.
Players do not need to beat the base campaign of Diablo 4 to start playing the Spiritborn. When creating the character, you can opt to skip the original campaign and jump straight into the Vessel of Hatred storyline set in the Nahantu region. This immediately grants access to the new zone, Kurast, and the updated progression systems without grinding through Act 1 to Act 6 again.
Unlocking and Recruiting Mercenaries
While the Spiritborn is the main character addition, Vessel of Hatred introduces four recruitable mercenaries who act as specialized combat companions, functioning similarly to unlockable support heroes. These companions are unlocked sequentially during the main campaign of the expansion.
- Rahier the Shieldbearer: Unlocked automatically during the early campaign quests in Nahantu. He acts as your primary tank, wielding a shield and taunting enemies.
- Varyana the Berserker Crone: Found in the Quiche-Hagan area after completing specific regional stronghold clearances. She deals heavy physical damage with dual axes.
- Aldkin the Cursed Child: Discovered in the deep jungles during Act 2 of the expansion story. He uses dark magic and hexes to weaken enemy crowds.
- Subo the Drunken Archer: Recruited by completing his personal side questline in the central camps of Nahantu. He reveals hidden elite monsters on the minimap and snipes targets from afar.
Spirit Guardian Passives and Specialization Unlocks
The true "secret" depth of the Spiritborn class lies in mastering its four Spirit Guardians—Gorilla, Eagle, Jaguar, and Centipede. At level 15, you gain access to the Spirit Hall class mechanic quest, titled 'Halls of the Gorilla'. Completing this short questline at the Temple of the Primage in Nahantu unlocks your primary Spirit Guardian slot.
At level 30, you can assign a secondary Spirit Guardian power, allowing you to mix and match passive bonuses. For example, pairing the primary Jaguar bonus (increased attack speed and ferocity stacks) with the secondary Gorilla bonus (generating barrier upon using a defensive skill) transforms the class into an unstoppable juggernaut.
Kurast Undercity and Endgame Mastery
To fully kit out your Spiritborn and unlock top-tier ancestral gear, you must conquer the Kurast Undercity, a time-attack multi-stage dungeon unlocked after completing the Vessel of Hatred campaign. Success in the Undercity depends on activating Tributes and Bargains before entry. Using a 'Tribute of the Titans' alongside three specific 'Chances of the Ancestors' increases the drop rate of unique items tailored specifically to Spiritborn builds.
When running the Undercity, your objective is to kill yellow-bar elite monsters and complete purple-ringed events to raise your coordination level to 4 before the timer expires. Reaching Tier 4 ensures maximum chest rewards at the end of the run, providing the legendary aspects required for endgame builds like Quill Volley or Quille-Centipede DOT configurations.
Paragon Board Optimization for Spiritborn
Reaching level 60 unlocks the upgraded Paragon system in Vessel of Hatred. The Spiritborn features unique legendary paragon nodes that dramatically alter playstyles. For maximum efficiency, prioritize the 'Sapping' board for resource generation or 'Citadel of the Centipede' if you are running a poison-heavy status damage build.
Ensure you slot the 'Inexorable Force' glyph into your primary socket to pull distant enemies into your AoE range, drastically speeding up dungeon clear times across Nightmare Dungeons and Torment difficulty tiers. Balance your resistances using regional Renown rewards in Nahantu to cap all elemental resistances at 70% before attempting Torment I and above.
Dark Citadel Raid Unlocks
The final layer of character progression in the expansion is the Dark Citadel, Diablo 4's first cooperative raid activity. Unlocked immediately upon reaching level 60 and completing the campaign, this non-matchmaking activity requires a party of two to four players to navigate wing-based puzzles, platforming challenges, and multi-phase boss encounters.
Completing the three wings of the Dark Citadel—First Wing: Nahantu Stronghold, Second Wing: Altar of Ruin, and Third Wing: The Boiling Spire—rewards exclusive weekly cache items, unique mount trophies, and high-tier cosmetic armor sets that showcase your mastery of the Vessel of Hatred expansion.