Diablo 4 Guide: What to Do Before Season 12 End

As Season 12: Season of the Butcher barrels toward its projected end on April 28, 2026, players face the familiar question: what must be done before it's too late? This season's short duration makes efficient preparation more critical than ever.

This guide breaks down everything you need to complete, claim, and clean up before the season ends, ensuring you don't lose hard-earned rewards to the Eternal Realm transition.

♦♦♦ Critical Priority: Do These Before Anything Else

1. Complete Your Season Journey

Why it matters: The Season Journey is the backbone of seasonal progression. Completing chapters unlocks exclusive, permanently missable cosmetic rewards, including armor sets, titles, and sometimes mounts or mount armor. Once the season ends, unfinished objectives cannot be revisited.

How to complete efficiently:

• Focus on objectives that can be completed simultaneously. For example, running Nightmare Dungeons can progress multiple goals at once.
• Prioritize high-value tasks: World Boss kills, Uber Boss encounters, The Pit progression, Helltide events, and gear upgrades (Masterworking/Tempering).
• If stuck on a specific chapter, check the objectives list for tasks you can chain together in one session.

Consequence of skipping: All unearned seasonal cosmetics and titles become permanently unavailable.

2. Finish & Claim Your Battle Pass (The Reliquary)

Why it matters: The Season 12 Battle Pass, known as The Reliquary, contains both a free track and a Premium track. Rewards include exclusive cosmetics, emotes, mount skins, and Platinum currency. Crucially, rewards must be manually claimed before the season ends.

How to claim everything:

• Open the Battle Pass interface and look for the countdown timer on unclaimed rewards.
• If you haven't reached the end of the pass, focus on Helltides and Nightmare Dungeons for the fastest Favor (pass XP) gain. Alternating between activities yields better efficiency than repeating one.
• Use any remaining Smoldering Ashes to unlock seasonal blessings—these do not carry over.

Consequence of skipping: Any unclaimed rewards are permanently lost, even if you earned them.

3. Spend All Seasonal-Exclusive Resources

Why it matters: Season-specific currencies and summoning materials do not transfer to the Eternal Realm. This includes boss summoning items, seasonal mechanic resources (like Blood Lures), and temporary crafting materials.

How to use them:

• Summon bosses: Use all your summoning materials to farm Uber Bosses for Mythic Uniques and high-tier gear.
• Gamble Obols: Spend all Obols at the Purveyor of Curiosities before the season ends.
• Masterwork & Temper: Use any remaining crafting resources to perfect your current build's gear—there‘s no benefit to hoarding them.

Consequence of skipping: All leftover materials vanish, effectively erasing hours of farming.

♦♦High Priority: Maximize Long-Term Value

4. Farm Key Uniques & Perfect Your Build

Why it matters: Season 12 introduced unique items and build-defining mechanics that may not function the same way in the Eternal Realm. Some builds heavily reliant on seasonal blessings or temporary powers will lose effectiveness after the season ends.

What to farm:

• Uber Bosses: The most reliable source for Mythic Uniques.
• High-tier Nightmare Dungeons: Target specific Unique items your build requires.
• Helltide Chests: Efficient for gear and materials.

Pro tip: If you've been meaning to test a powerful season-specific build, now is the time to do it. The experience won't be replicable later.

Consequence of skipping: You miss the opportunity to experience the build at its peak power.

5. Clean & Organize Your Stash

Why it matters: When the season ends, all seasonal stash items are transferred to the Eternal Realm via a temporary in-game mail system. You have a limited time (usually 30 days) to claim them before they are deleted.

How to organize efficiently:

Keep only:

• Perfectly rolled gear (Best in Slot items)
• Mythic Uniques
• Rare cosmetics or sentimental pieces

Salvage or sell:

• Low-roll Legendaries
• Replaceable gear
• Items for builds you no longer play
• Use tabs or labeling to separate gear for different characters or builds.

Consequence of skipping: Overwhelmed Eternal Realm stash, lost items due to mail expiration, and difficulty finding key pieces later.

6. Save Your Build (The Most Overlooked Step)

Why it matters: Paragon Boards and skill trees reset each season. Without a record, your highly optimized build will be difficult or impossible to replicate in the future—especially if gear affixes or class mechanics change.

How to save it:

• Screenshots: Capture your skill tree, Paragon Boards, and key gear pieces.
• Written notes: Use a document or spreadsheet to record which Paragon nodes and glyphs you used.
• Build planner: Export your setup to a community build planner like D4Builds.gg for permanent reference.

Consequence of skipping: You lose the blueprint for a build you may want to revisit in the Eternal Realm or future seasons.

♦ Time-Permitting: Extra Goals & Long-Term Gains

7. Push Endgame Challenges

Why it matters: Season 12's short duration means the power level is at its peak now. Tackling high-tier content can earn titles, achievements, and personal satisfaction.

What to attempt:

• High-tier The Pit runs
• Nightmare Dungeon pushing
• Solo Uber Boss kills
• Build limit-testing

Pro tip: Optimize your gear and resistances before attempting high-tier content. Don't waste time on incremental pushes if your build isn't ready.

8. Complete Renown & Altars of Lilith (Long-Term Investment)

Why it matters: This is arguably the most valuable long-term investment in the game. Renown tiers, Altars of Lilith, map exploration, and certain waypoints are account-wide and persist across all future seasons.

What you gain:

• Additional skill points
• Increased potion capacity
• Extra Paragon points
• A significant head start on every future character

How to finish efficiently:

• Use an interactive map to locate remaining Altars.
• Focus on Helltides and side quests in regions where Renown is incomplete.

Consequence of skipping: You start every future season at a disadvantage compared to players who completed these.

9. Prepare for Season 13

Why it matters: A smooth season start sets the tone for the first week. Small preparations now can save time later.

How to prepare:

• Research upcoming class changes or new mechanics if patch notes are available.
• Decide on a starter class in advance.
• Clear character slots if needed.
• Mentally reset: Remember that each season is a fresh start. Let go of the urge to hoard resources for the Eternal Realm.

Season 12 is currently projected to end on April 28, 2026. With the season's shorter duration, starting early ensures you don't miss out on exclusive rewards. Good luck, and may your slaughter in the Butcher's domain be memorable.