Kurast Undercity Boost

All You Need to Know About Kurast Undercity Boost

What is Kurast Undercity?

The Kurast Undercity is a time-attack dungeon introduced in the Vessel of Hatred expansion. Located beneath the city of Kurast in Nahantu, this activity sends you through three procedurally generated floors against a ticking clock.

You start each run with a set amount of time – usually 100 seconds, but Tributes can reduce this to as low as 45 seconds. To succeed, you must kill Afflicted Monsters and destroy Afflicted Structures marked with an orange hourglass icon to gain extra time. Activating Spirit Beacons and Grand Beacons spawns waves of enemies; defeating them increases your Attunement meter. The higher your Attunement Rank (up to 4) when you reach the boss, the better your rewards from the final chest.

Kurast Undercity Tributes

Tributes are consumable items used to start a run of the Kurast Undercity. They increase the challenge of the run by reducing your starting time, time bonuses, and potion drops, but in return, they guarantee specific high-value rewards if you finish with at least Attunement Rank 1. Higher-rarity Tributes offer better rewards but are also more difficult to complete. Here’s a full list:

• Magic Tributes
  • Tribute of Pride – Guarantees Legendary item drops.
  • Tribute of Mystique – Guarantees Magic Runes.
• Rare Tributes
  • Tribute of Titans – Rewards random Boss Summoning Items.
  • Tribute of Refinement – Rewards Masterworking Materials.
  • Tribute of Harmony – Guarantees Runes.
  • Tribute of Growth – Rewards bonus Experience Points (XP).
• Legendary Tributes
  • Tribute of Radiance – Guarantees Ancestral Legendaries.
• Unique Tributes
  • Tribute of Ascendance – Rewards several Uniques with an increased chance of a Mythic Unique.
• Mythic Tributes
  • Mythic Tribute of Armaments – Has an extremely high chance to reward at least one Mythic Unique. Considered the most valuable Tribute to use in Season 15.
  • Greater Tribute of the Horadrim – Used to farm Mythic Seals.

How Rank 4 Attunement Is Reached

Kurast Undercity has three timed, procedurally generated floors. Afflicted enemies and time-extending structures keep the run alive, while Spirit and Grand Spirit Beacons raise Attunement. We reach Rank 4 before entering the boss room because final reward quality is tied to the Attunement earned during the run.

Tributes, Bargains, and Rewards

Tributes modify the reward category and difficulty of the run. Bargains narrow or improve eligible rewards when the required materials are available. Support confirms the combination used for your selected target before play begins; changing the target after a Tribute is consumed may require a new run.

Undercity Rewards and RNG

Rank 4 improves the final chest, but the number, rarity, Greater Affixes, and exact identity of its items remain random. Selecting Mythic Uniques improves your chances to get Mythics.

Who Is This Service For?

• Players who have Tributes saved up but cannot consistently clear the Undercity within the strict time limits – especially on higher Torment difficulties where starting time is reduced to 45–60 seconds
• Players who want to target-farm specific items like Runes, Masterworking Materials, or Mythic Uniques quickly;
• Players who lack a speed-farming build capable of reaching Attunement Rank 4 while managing the clock and want some help from a reliable party;
• Players who prefer to skip the repetitive grind of farming Tributes from Tree of Whispers Caches, Helltides, and world bosses;
• Players who want to avoid failed runs, wasting both time and valuable Tributes;