Kurast Undercity

The Kurast Undercity, introduced in Diablo 4's "Vessel of Hatred" expansion, is a multi-level, time-attack dungeon beneath the city of Kurast (Map). Players race against the clock, defeating enemies and completing events across one of three distinct districts to reach unique bosses. Success is rewarded with valuable loot, scaling with your performance.

The difficulty of the Undercity will always be in line with the difficulty you are playing on, i.e Hard, Penitent or Torment 4 so it will be as appropriate during leveling up as it will be at endgame.

Entrance to the Undercity

Unlocking the Undercity

On completion of the Vessel of Hatred campaign, Ormus (Map) will ask you to undertake a few small quests which introduce players to endgame content, including the Undercity.

To gain access to the Kurast Undercity, start by completing the "Reunion" (Map) quest from the Vessel of Hatred Campaign, ensuring you are Level 15 or above. This accomplishment will activate the Priority Quest "The Kurast Undercity," (Map) beginning at the Kurast Bazaar. From there, you will navigate through a series of tasks, moving between different areas of the city and the Undercity itself, tackling challenges in each district. The quest chain ultimately leads to a confrontation with Alia, marking the final step to fully unlock the dungeon and complete the storyline.

Accessing the Undercity

The entrance to the Undercity is different to the one you used in the Campaign Quest (Fundament of Faith Map). It is still in Kurast but it's on the eastern side of town. The dungeon entrance portal will appear once you have activated the Spirit Brazier in the same area.

Tribute and Bargain

Offering a Tribute and Bargain at the Brazier allows you to customize the kinds of rewards you receive for completing the Undercity. You do not need to offer a Tribute to enter the Undercity.

Offering a Tribute & Bargain at the Spirit Brazier

Tributes can be earned by completing activities such as Nightmare Dungeons, events, Whispers and Undercity runs (see table below). They are fairly rare drops. These Tributes can be offered at the Spirit Brazier to target specific rewards for your next run, but doing so will also increase the challenges you face, such as reducing the base time you have to complete it. The difficulty of these challenges scales with the quality of the Tribute and the current difficulty level of your world.

Higher-quality Tributes grant unique bonuses, such as Increased Experience Gain or awarding Runes upon completion. To claim these bonus rewards, you must reach at least Rank 1 Attunement, with successive ranks boosting the rewards even further.

List of All Tributes

Tribute	Difficulty	Details	Dungeon Affix	Drops from	Players
Tribute of Growth	Any	Earn Experience at Attunement Rank 1	Starting Time: 100 seconds Time Bonus Penalty: -15% Potion Drop Penalty: -20%	Random	All
Tribute of Heritage	Any	Completing the dungeon with at least Attunement Rank 1 will reward Uniques specific to your class	Starting Time: 100 seconds Time Bonus Penalty: -15% Potion Drop Penalty: -20%	Random	All
Tribute of Mystique	Any	Earn Magic Runes at Attunement Rank 1	Starting Time: 100 seconds Time Bonus Penalty: -15% Potion Drop Penalty: -20%	Random	All
Tribute of Pride	Any	Earn Legendaries at Attunement Rank 1	Starting Time: 100 seconds Time Bonus Penalty: -15% Potion Drop Penalty: -20%	Random	All
Tribute of Harmony	Torment	Earn Runes at Attunement Rank 1	Starting Time: 75 seconds Time Bonus Penalty: -25% Potion Drop Penalty: -30%	Random	All
Tribuite of Refinement	Torment	Earn Obducite at Attunement Rank 1	Starting Time: 75 seconds Time Bonus Penalty: -25% Potion Drop Penalty: -30%	Nightmare Dungeons Infernal Hordes	All
Tribute of Titans	Torment	Earn Boss Summoning Items at Attunement Rank 1	Starting Time: 75 seconds Time Bonus Penalty: -25% Potion Drop Penalty: -30%	Random Summoned Bosses	All
Tribute of Radiance (Resolute)	Torment	Earn Ancestral Legendaries at Attunement Rank 1	Starting Time: 60 seconds Time Bonus Penalty: -35% Potion Drop Penalty: -40%	Whisper Caches	Offerer
Tribute of Radiance	Torment	Earn Ancestral Legendaries at Attunement Rank 1	Starting Time: 60 seconds Time Bonus Penalty: -35% Potion Drop Penalty: -40%	World Bosses	All
Tribute of Ascendance (Resolute)	Torment	Earn Uniques at Attunement Rank 1, with increased chances of a Mythic Unique.	Starting Time: 45 seconds Time Bonus Penalty: -50% Potion Drop Penalty: -50%	Whisper Caches	Offerer
Tribute of Ascendance	Torment	Earn Uniques at Attunement Rank 1, with increased chances of a Mythic Unique.	Starting Time: 45 seconds Time Bonus Penalty: -50% Potion Drop Penalty: -50%	World Bosses	All

Bargains are modifiers applied to Tributes at the Spirit Brazier. After placing a Tribute, you can select a Bargain to customize your run's rewards, such as increasing the chances of obtaining items with specific affixes or guaranteeing certain types of drops. Activating a Bargain requires resources like crafting materials or gold, so choose based on your current goals and available materials.

List of All Bargains

Bargain	Cost	Bonus
More Weapons	30 x Iron Chunk	You will be randomly rewarded 1 - 3 additional pieces of Equipment, all of which are Weapons or Offhands.
More Armor	30 x Raw Hide	You will be randomly rewarded 1 - 3 additional pieces of Equipment, all of which are Helm, Chest Armor, Gloves, Pants, or Boots.
More Jewelry	30 x Herbs	You will be randomly rewarded 1 - 3 additional pieces of Equipment, all of which are Rings or Amulets.
Core Stats	50 x Veiled Crystal	Legendaries will possess a flat Core Stat when possible.
Primary Resource	50 x Veiled Crystal	Legendaries will possess a normal affix related to your Primary Resource When possible.
Resistances	50 x Veiled Crystal	Legendaries will possess a Resistance affix when possible.
Offensive Legendaries	10 x Baleful Fragment	Legendary equipment will possess an Offensive Aspect when possible.
Defensive Legendaries	10 x Coiling Ward	Legendary equipment will possess a Defensive Aspect when possible.
Utility Legendaries	10 x Coiling Ward	Legendary equipment will possess a Utility Aspect when possible.
Mobility Legendaries	10 x Abstruse Sigil	Legendary equipment will possess a Mobility Aspect when possible.
Resource Legendaries	10 x Abstruse Sigil	Legendary equipment will possess a Resource Aspect when possible.
Chaotic Uniques	57 x Murmuring Obols	You may find Uniques for any class.
Skill Ranks	5,000,000 Gold	Legendary Armor will always possess at least one Skill Rank affix.
Passive Ranks	50,000,000 Gold	Legendary Amulets will always possess at least one Passive Rank affix.

Beating the Undercity

There are three Districts in the Undercity and within each of them, there are 3 levels plus 1 Boss level. You do not get to select which District you will get when you activate the Undercity portal, it's randomly assigned.

• Cave District - Longtooth, The Wretched
• Temple District - Yoche, The Golden
• Ziggarut District - Alia, Kurast's End

Depending on which Tribute, if any, you offered at the Spirit Brazier you will begin with a set amount of time on a Timer that sits next to the minimap. If this timer runs out before you make it through all three levels you will fail the dungeon. However, you can add seconds to the timer by destroying Afflicted monsters and objects. There are different levels of afflicted monsters and the tougher the monster the more seconds you add to the timer killing them.

• Minor Afflicted - 1 Second
• Lesser Afflicted - 10 Seconds
• Lesser Afflicted (named) - 15 Seconds
• Afflicted Object - 15 Seconds
• Greater Afflicted - 30 Seconds
• Mini-Boss Afflicted - 30 Seconds

Undercity. What's what

Attunement Ranking

Beacon done

The objective is to build your Attunement Rank up to level 4 (see image above) and make it through the portal to the boss level before the timer runs out. Once you reach the boss level the timer disappears. The higher your Attunement Rank the better and more plentiful your rewards will be when you have killed the final District Boss. You must get to at least Attunement Rank 1 to receive any loot.

You increase your Attunement by killing monsters and igniting multiple Beacons positioned across each level that add even greater boosts to Attunement.

It is not just a matter of tapping the Beacon to ignite it, you need to kill all the accompanying monsters to get the boost to Attunement. You will know you've successfully done that when the Beacon goes grey on your minimap. You'll also hear a speed boost ignite on you which you can use to speed to your next target.

Each of the three levels has Beacons to ignite but at the end of level 2 there will be a Grand Spirit Beacon with considerably more monsters surrounding it and clearing them all will add a lot of Attunement.

You'll see small Attunement flames appear where you are fighting and these represent the Attunement you have just earned but you do not need to collect them, they are just a visual aid.

If you reach Attunement Rank 4 you can head straight to the final portal to the Boss Level as there is no benefit to killing any more monsters. If you have reached a lower Attunement Rank but your timer is running out, leg it to the final portal and the boss. It's better to get some loot than just fail the dungeon run. Better luck next time.

Portal Pranksters

Portal Pranksters, unique to the Kurast Undercity dungeon, add a twist to your run. These elusive Treasure Goblins dart through a series of portals as soon as you approach, pulling you into a fast-paced chase through the dungeons. If you manage to catch and defeat one, you'll unlock a bonus chest containing valuable loot, including Tributes, Runes, and other powerful rewards.

Portal Prankster for Bonus Loot!