Diablo 4 Season 15 gives players a new reason to revisit Old Tristram, and the reward is worth the trouble. The Hellfire Torch is a Mythic Charm tied to a special quest chain, so you cannot simply pick it up during a normal endgame run. You will need several rare materials, a short exploration task, and a difficult fight against Diablo, Baal, and Mephisto at the same time. Having a few useful Diablo 4 Items ready can make the preparation less frustrating, especially when your build still needs upgrades before taking on the encounter.

Gather the Three Splinters

Your first job is to collect the Splinter of Destruction, Splinter of Terror, and Splinter of Hatred. These materials are linked to the three Prime Evils and can drop from their related encounters on Torment 10. The fights are tougher than the difficulty label suggests because an extra monster power modifier raises the pressure during combat. Drops are random, so do not expect to complete the set in one evening. You may get the same Splinter several times before the missing one finally appears.

There is another route worth using while you wait for a stubborn drop. Seasonal reputation caches can contain the same materials, including repeatable caches earned through continued Season 15 activities. That means you can rotate between boss runs, Helltide events, and other seasonal content instead of standing in one activity for hours. Group play helps too. A team can clear the encounters faster, and everyone can keep working towards the materials they still need. Once the three Splinters are in your inventory, place them in the Horadric Cube and transmute them into Wirt's Lucky Coins. Keep the coins safe, because they are needed for the next stage.

Complete Cain's Journal Search

The first unlock also requires ten journals connected to Cain. They are spread through the base-game zones, and you do not need an expansion to complete this part. The search sounds longer than it is. As you move near a journal, a small marker appears on the minimap, so you will know when to slow down and check the area. Players who follow a sensible route can often finish the entire search in around five to fifteen minutes.

After all ten entries have been collected, visit the Imperial Library and speak with Cain. This activates Cain's Memory and opens the way to Old Tristram. It is a permanent unlock for your character, which matters because the journal hunt does not need to be repeated for every Torch run. On later attempts, you can focus on collecting Splinters and preparing the coins instead of retracing the same zones.

Enter Uber Tristram

When you arrive in Old Tristram, take Wirt's Lucky Coins to the village fountain and make a wish. The portal to Uber Tristram will open, but think before stepping through it. Once the encounter begins, the entrance closes. On Softcore, use your own town portal if you need repairs or a quick inventory trip. Leaving through the red exit can stop you from getting back inside, turning a good run into a wasted attempt.

The fight puts all three Prime Evils on the field together. Try to keep their health bars close instead of burning down one target immediately. If one boss falls too far ahead of the others, the remaining enemies may resurrect it, adding a large amount of extra work. When the trio forms a triangle and starts using broad laser attacks, standing inside the formation can be safer than staying outside it. Still, watch the floor. Ground effects can remain active while you are focused on positioning, and a long fight leaves plenty of time for small mistakes to become fatal.

Final Thoughts

Once you defeat Uber Tristram for the first time, the permanent unlock is complete. Future runs require fresh Splinters and another set of Wirt's Lucky Coins, but Cain's journals and the Old Tristram quest chain stay finished. Each clear awards a Hellfire Torch connected to the class that completed the encounter, and its affixes can change from run to run. That makes repeat clears worthwhile when you are chasing a better roll. Some groups also use rapid party resets and low-level characters to shorten the cycle, but that approach depends on an unintended interaction and may stop working without warning. The dependable method is still the regular loop: earn Splinters, craft the coins, prepare for the three-boss fight, and keep farming until the Torch fits your build. Players who need to restock materials can also compare available diablo 4 mats for sale before committing to another long farming session.