Genshin Impact Stygian Onslaught: Unlock and Rewards

Stygian Onslaught is a recurring three-battle combat challenge in Genshin Impact. Unlock it at Adventure Rank 20 after Archon Quest Prologue: Act III, “Song of the Dragon and Freedom.” Start at Hard if your roster can handle it: one clear also claims the lower tiers’ rewards. Fearless and Dire can be played in co-op, but their own tier rewards require a single-player clear.

This guide separates difficulty rewards from the time-limited Disturbance Outbreak, explains the Resin and Dire Prestige costs, and helps you decide where to stop. Current-cycle check, 31 October 2026: the announced cycle ends on 3 November at 03:59; its Outbreak ended on 10 October at 03:59. Those cycle dates do not mean the permanent mode is being removed.

Each challenge contains three timed battles on separate Battlefields. Select the difficulty before entering and defeat all opponents across the three battles to complete the challenge. Higher difficulties add stronger enemies and stricter restrictions.

Stygian Onslaught is a permanent mode with rotating cycles, not an always-open Resin farm. A cycle lasts about five weeks; use the dates in that cycle’s notice rather than assuming it ends on patch day. The official current-cycle notice lists 30 September 2026 at 10:00 to 3 November 2026 at 03:59. HoYoWiki labels this schedule as server time; the official notice itself does not state a time zone. Check the in-game countdown for your server.

The official eligibility rules are AR 20 and completion of Prologue: Act III, “Song of the Dragon and Freedom.” Completing “Perilous Trail” is a recommendation for the best experience. Use the event’s in-game navigation to reach the challenge; the cited notice does not document a universal menu shortcut. Our Archon Quest order and AR requirements guide covers the story sequence.

Choose your target first. For the Primogem reward track, start at Hard rather than repeating Normal and Advancing. For Dust of Enlightenment, progress into Menacing and a solo Fearless clear. For the temporary weapon appearance, aim at solo Dire. The separate Artifact farming loop needs AR 45 and an active Outbreak; merely unlocking the mode at AR 20 does not unlock that loop.

The linked paid service starts at $4.49 for Normal–Hard; the configurator lists $8.09 through Fearless and $10.79 for Dire before optional priority. It is played on your own roster with account access, not a co-op carry that bypasses the solo reward rule. A standard Dire clear is not a promise of the separate 180-second Sublimation objective.

All six difficulties allow co-op with up to four players. Normal, Advancing and Hard offer matchmaking or same-world co-op. Menacing, Fearless and Dire require joining the same world; there is no matchmaking for those tiers.

HoYoWiki’s difficulty table allows character reuse through Hard and prohibits it from Menacing upward. In solo play, reserve separate lineups for all three Battlefields: a full four-character team in each uses twelve distinct characters. You do not have to fill every slot, so twelve is a full-team planning target, not a universal entry requirement.

Before entering, match elemental application and survivability to each boss’s current mechanics. Allocate contested supports before assigning all three teams. HoYoWiki also warns that moving shared weapons or Artifacts between characters assigned to different Battlefields can reset the affected record; finish the allocation before chasing a combined clear time.

Up to 16 characters can be Exalted Ones at a time, and the pool can change. On Fearless and below, their Eminent Boon can help your lineup; on Dire, that boon is inactive.

HoYoWiki describes the boon as +20% Max HP, ATK and DEF and says the pool is selected from server-wide Eminence earned with characters in Dire clears and its Perilous Objective. This is not a universal ranking of the best teams, a free character loan, or a reason to ignore the three bosses’ mechanics. The official cycle notice confirms the changing pool and Dire exception; the numeric boon and selection detail are wiki-documented rather than client-tested here.

During the first ten-day Disturbance Outbreak, players at AR 45 or above can complete Hard or higher and spend Resin for rewards from a selected Domain of Blessing while earning Dire Prestige. Choose the Domain through Reward Settings before farming; in co-op the leader controls the Domain choice. These are Artifact rewards, not Talent or Weapon Ascension Materials.

Current cycle: the official notice lists the challenge through 3 November 2026 at 03:59 and the Outbreak only through 10 October at 03:59. As of 31 October, the Outbreak is closed. Difficulty challenges remain available until the cycle ends, but the special Resin reward claim is unavailable after the Outbreak. Ordinary Domain runs remain a separate way to farm Artifacts.

The live HoYoWiki table lists these claim options. The official Luna I update independently confirms that crafting Condensed Resin costs 60 Original Resin and that it claims triple rewards. Do not use the old 40-Prestige Condensed Resin calculation.

Every 120 Dire Prestige awards an additional random five-star Artifact from the selected Domain’s two sets. The 1,200 milestone grants one Dust of Enlightenment per cycle. The bonus Artifact is repeatable: 1,200 is the Dust threshold, not a cap on further Artifact bonuses.

Budget: from zero Prestige, the 1,200 milestone takes 60 claims of 20, 30 claims of 40, or 20 claims of 60, or a mixture. Twenty Condensed Resin claims represent 1,200 Original Resin spent on crafting, not free rewards. You cross the 120-point Artifact milestone ten times on the way. Count reward claims separately from the three-battle difficulty challenge; neither the Resin conversion nor the ladder proves a fixed completion time.

No mandatory eighteen-battle route: clearing Hard once covers Normal and Advancing rewards. If you then progress through Menacing, Fearless and Dire, that is four three-battle challenges, or twelve battles before retries. If you only want the lower-tier Primogems, stop after the Hard clear. See our Resin guide for related farming concepts; the current conversion table above takes precedence over older values.

The current official event notice confirms the reward rules but its reward image contains item icons, not a numerical per-difficulty table. The amounts below are documented in the live HoYoWiki Stygian Onslaught entry; they have not been independently checked in the game client.

Separate clear rewards from the Outbreak milestone

The listed Normal, Advancing and Hard rewards total 450 Primogems. Across the five resource-paying tiers through Fearless, the table adds up to 500,000 Mora and 25 Hero’s Wit. Menacing and solo Fearless supply two Dust of Enlightenment in total; the third Dust requires the separate 1,200-Prestige Outbreak milestone. You cannot earn that third Dust through a late difficulty clear after the Outbreak closes.

Higher clears include lower-tier rewards

A Hard clear also meets the Normal and Advancing reward conditions. You do not need to clear all six difficulties separately. Fearless and Dire retain their single-player reward conditions even though co-op is available.

Dire appearances expire

A solo Dire clear unlocks the Radiant Phantasm weapon appearance reward. Completing the entire three-Battlefield solo challenge within 180 seconds unlocks the Sublimation version; 180 seconds is not a separate allowance for each boss. HoYoWiki labels these appearances as limited-time, lasting until the next version’s Stygian Onslaught event. They are cosmetic and should not be described as permanent weapon acquisitions.

Co-op access does not grant solo-only rewards

Fearless and Dire support same-world co-op, but those tiers’ own rewards require a single-player clear. This restriction is stated in the official event notice, not merely inferred from a community guide.

Exalted buffs stop at Dire

The Eminent Boon can help on Fearless and below. It is inactive on Dire; choose a roster that works without that bonus.

The Outbreak ends before the challenge cycle

After the Outbreak, the special Resin claim is unavailable. This does not mean that all Artifact farming stops: ordinary Domains remain separate. Nor does a normal Domain run award the closed Outbreak’s Prestige milestone.

A higher clear avoids unnecessary lower clears

Start at Hard for the three Primogem tiers if you can complete it. Treat Menacing and solo Fearless as the next material goals; Dire is an optional temporary cosmetic goal, with the 180-second objective separate from a standard clear.

Sources and Verification

Reviewed on 31 October 2026. Official announcements establish eligibility, dates and restrictions. HoYoWiki supplies the detailed reward and preparation tables; being hosted by HoYoverse does not make a community-maintained entry a developer patch note.

No measured clear times or tested optimal team builds are claimed. Reward totals are arithmetic from the listed conditions, not additional payouts. Check the in-game reward panel and server countdown before a deadline or Resin spend.