The Vessel of Hatred expansion introduced Mercenaries, combat allies with unique backstories and abilities. Recruited through the main story, each companion offers active support in battle and passive skill bonuses that grow as you build rapport with them.
| Mercenary | Background | Signature Ability |
|---|---|---|
| Raheir the Shieldbearer | Soldier from Gea Kul | Shield Block |
| Varyana the Berserker Crone | Exiled tribal warrior | Massacre Meter |
| Aldkin the Cursed Child | Born half-demon after the First Khazra's dark rituals | Metamorphosis |
| Subo the Drunken Archer | Bounty hunter | Seeker |
Each mercenary offered unique support options whether players chose them as a primary companion or as reinforcements in battle. Building rapport through shared adventures unlocked additional skills and benefits, giving long-term players strong incentives to invest in specific companions.
The Dark Citadel is the co-op endgame challenge added with Vessel of Hatred. Players work through this fortress as a team, with each wing offering different enemies and puzzles that demand coordination and strategic planning.
Completing the Citadel earns Citadel Coins alongside legendary item drops, redeemable for exclusive cosmetics that echo the sinister aesthetic of the fortress. Weekly clears keep the rewards pipeline flowing for dedicated groups.
The Party Finder tool was one of Vessel of Hatred's most impactful quality-of-life additions, allowing players to discover and join others in Sanctuary based on activity type and playstyle preferences — from Nightmare Dungeon runs to full Dark Citadel clears.
Before Party Finder, coordinating public groups required third-party tools or in-game proximity. The tool democratised group formation — players could filter by content type and role preference, eliminating the usual friction of assembling a team from scratch.
Kurast Undercity is a time-attack dungeon where players race against a draining timer, clearing demon-infested streets to slow its descent. Tributes collected during each run carry forward into future dives, creating an escalating risk-reward loop across multiple attempts.
Vessel of Hatred overhauled the early-game progression system with expanded customisation options, giving players meaningful build choices well before reaching the endgame. These changes reduced the time to first impactful decision and gave new characters more agency during the leveling curve.
Vessel of Hatred captivated players with rich, interactive content and innovative features. The Mercenary system added personal companion progression alongside the core seasonal grind, Party Finder removed the friction of group matchmaking, and the Dark Citadel gave co-op squads a high-stakes weekly objective. All four systems — Mercenaries, Dark Citadel, Party Finder, and Kurast Undercity — carry forward into Lord of Hatred and remain part of the active endgame rotation.
Players gearing up for Citadel-level encounters can browse Diablo 4 boss carry listings for help with the hardest encounters in Sanctuary.
Last reviewed 2026-06-12 against Vessel of Hatred (October 2024) — Maintained by WowCarry's Diablo 4 team.
