Diablo IV: Lords of Hatred Expansion – New Content and the Ongoing Hunt for the Secret Cow Level

The Lords of Hatred expansion, released May 2026, adds an eight-hour campaign on the island of Skovos, where players confront Mephisto disguised as ex-prophet Akarat. Two new classes, the Paladin and the Warlock, join the existing roster. Endgame content expands with Nightmare Echoes, The Pit (Nephalim Rifts), War Plans playlists, and an updated Horadric Cube that streamlines item transmutation.

Diablo IV: Lord of Hatred – Anger Management – Kakuchopurei

Previous expansions, notably Vessel of Hatred (2024), introduced limited endgame modes. Lords of Hatred reuses Diablo III-style dungeon loops, repackaging them as Nightmare Echoes and Nephalim Rifts, while War Plans reward sustained runs. The Horadric Cube, now more accessible, enables quick crafting of unique gear, echoing earlier titles.

Diablo IV: Lord of Hatred – Anger Management – Kakuchopurei

Players pursuing a hidden cow-themed area follow a multi-step quest chain. The sequence begins with locating a cryptic tome on Skovos, chasing a crow that drops a skull, and lighting the skull on a brazier. Subsequent tasks require defeating corrupted Amazon enemies for a full armor set, using the new fishing mechanic to retrieve a coffin that opens a concealed dungeon, and crafting a relic with the Horadric Cube. The final clue leads to a boat that transports players to a newly discovered cow island, where a bucket of milk, portal row, and mythic-level fish appear, yet the intended reward remains undefined.

Diablo 4: Lord of Hatred players seem close to finding the secret cow level and the final clue might be on a newly discovered cow island

Reviewers describe much of the new endgame as a ‘reiteration…in a new coat of paint,’ noting the reliance on familiar Diablo III loops. Some view the expansion as primarily monetizing a loot-driven audience, raising doubts about the value of added features. The secret cow level’s vague design and lack of in-game guidance have also drawn criticism for creating a potentially frustrating treasure hunt without official confirmation.

Diablo 4: Lord of Hatred players seem close to finding the secret cow level and the final clue might be on a newly discovered cow island

The cow island triggers a popup with multiple portals and an interactive bucket of milk, yet Blizzard has issued no official statement confirming a functional cow level. Datamining has uncovered related files, and players have identified a locked “Cow King’s Crown” helmet transmog entry. The final activation step after reaching the island remains undocumented, leaving the quest incomplete.

Diablo 4: Lord of Hatred players seem close to finding the secret cow level and the final clue might be on a newly discovered cow island

• “Let’s get the bad out of the way: a LOT of Diablo IV’s new endgame content is just a reiteration of Diablo III’s 10-year stretch endgame dungeons and short sessions, only in a new coat of paint.” — Reviewer, Kakuchopurei

Diablo IV: Lord of Hatred – Anger Management – Kakuchopurei

• “The Warlock lets you summon demons either as permanent companions or temporary aid, usually as makeshift wretched attacks.” — Reviewer, Kakuchopurei

Diablo IV: Lord of Hatred – Anger Management – Kakuchopurei

• “I never got around to collecting the cow milk and the Rusted Bardiche, so I had to stop there, but crafting them together gives you another relic, a cow-themed emote, and a cow-themed player title.” — PC Gamer author

Diablo 4: Lord of Hatred players seem close to finding the secret cow level and the final clue might be on a newly discovered cow island

Future expansions may confirm the cow level or introduce additional hidden content.

Diablo 4: Lord of Hatred players seem close to finding the secret cow level and the final clue might be on a newly discovered cow island