The Genshin Impact 7.1 banners line up neatly with this cycle of Stygian Onslaught: Vesna is the one who lets the team trigger Stellar Swirl, while Vodyanitsa covers both healing and support in Freeze and Stellar Swirl teams. This guide is organized into six sections — version overview, difficulty structure, boss mechanics, team comps, combat details, and resource planning.
Genshin Impact 7.1 Stygian Onslaught Window
Dates, burst window, and requirements
The event runs 2026-09-30 10:00 to 2026-11-03 03:59, and the disordered burst window covers the first 10 days, ending 2026-10-10 03:59. You need Adventure Rank 20 or higher plus the prologue act three "Song of the Dragon and Freedom".
What Radiant Light characters give you
Up to 16 characters become Radiant Light characters and receive buffs when fielded, but at Nightmare difficulty those buffs stop applying. The higher you climb, the more your roster and investment weigh, and the less the buffs can carry you.
Genshin Impact 7.1 Stygian Onslaught Difficulty Ladder
How the six tiers unlock
Difficulties run from Normal through Advanced, Hard, Dire, Fearless, and Nightmare. A higher starting difficulty applies more restrictions, and from Hard onward you must clear a tier to unlock the next . The efficient route is to clear Hard for the reward floor, then climb one tier at a time.
Scoring across three fights
A challenge requires three consecutive timed fights, and only clearing all three counts. Because the score accumulates across all three, one bad fight drags the whole run. Save your burst window for fights two and three and treat fight one as a setup phase.
Genshin Impact 7.1 Stygian Onslaught Boss Mechanics
Why the ice coffin is the break point
When the Frostwing's Blade drops below a health threshold it seals itself in an "ice coffin" and periodically deals Cryo area damage. The coffin becomes fragile under Stellar reactions and breaks more easily to Electro or Anemo attacks. Leave the coffin intact and it regenerates health and counters with ice swords; break it and the boss enters a weakened state.
Where Stellar Swirl fits
Stellar Swirl belongs to the Stellar reaction family, triggered when Cryo and Anemo meet. It spawns a Stella Vortex that explodes after a delay, and triggering it repeatedly in a short window stacks power and radius . Vesna's core value is that she lets the team trigger Stellar Swirl and deals Stellar Swirl damage under conditions .
Genshin Impact 7.1 Stygian Onslaught Team Plans
The Vesna Stellar Swirl core
Vesna is a five-star Anemo sword user who drives team Stellar Swirl triggers, and Voyanissa is a five-star Hydro catalyst who heals and buffs in freeze and Stellar Swirl teams . Both share the banner, which runs from the 7.1 update until 2026-10-13 17:59, with Diona, Faruzan, and Chongyun as the four-star lineup.
| Team | Composition | Weapon and role | Rotation |
|---|---|---|---|
| Stellar Swirl | Vesna + Cryo trigger + Voyanissa + flex buffer | Metamorphosis / Whirlpool Song | Buffer sets up, Vesna triggers Swirl, burst after coffin break |
| Freeze | Cryo DPS + Voyanissa + Anemo shred + healer | Energy recharge first | DPS applies Cryo, Voyanissa heals, Anemo shreds then closes |
| Coffin rush | Electro or Anemo rapid hits + Radiant Light carry + shield | Prioritise recharge | Break the coffin, burn the weakened window, hold healing for fight three |
Weapon choices on a budget
The limited five-star sword Metamorphosis grants crit damage, Stellar Swirl damage, or energy refund in sequence whenever the holder casts a skill or burst, resetting on swap. The catalyst Whirlpool Song grants healing bonus, raises max HP after healing, and converts that HP into attack for the active character. If primogems are tight, prioritise Metamorphosis for Vesna and give Voyanissa a recharge or healing catalyst instead of the signature bow or sword line.
Genshin Impact 7.1 Stygian Onslaught Fight Tips
- Start at Hard rather than Fearless; higher starting tiers add restrictions before you know the fight.
- Hold burst skills in fight one and spend them in fight two's pressure phase.
- Swap to Electro or Anemo the moment the Frostwing's Blade enters its ice coffin.
- The weakened window after the coffin breaks is your team damage window; keep healer energy for afterwards.
- Fearless and Nightmare only pay rewards for solo clears, and multiplayer caps at Hard.
- You cannot change teams between the three fights, so set weapons and artifacts before entering.
Reading the Radiant Light buffs
Radiant Light characters rotate as you progress and cap at 16. Practical advice is to concentrate them on fights two and three rather than spreading them across the roster, because buffs only matter inside a damage window.
Genshin Impact 7.1 Stygian Onslaught Resin Planning
Using the disordered burst window
During the burst window, AR 45+ players who clear Hard or above can spend resin for self-selected Sanctifying Elixir domain rewards while accumulating Stygian Onslaught Renown. Renown milestones pay extra artifacts and Sanctifying Essence. The window ends 2026-10-10 03:59, after which resin can no longer buy those domain rewards.
| Priority | Task | Reason |
|---|---|---|
| 1 | Resin spending inside the burst window | Ends 2026-10-10 03:59 |
| 2 | Renown milestone tiers | Convert into artifacts and Sanctifying Essence |
| 3 | Clearing Hard difficulty | Pre-req for higher tiers |
| 4 | Weapon and talent materials | Farmable with daily resin |
Upgrade order for Vesna and Voyanissa
Build Vesna first. She anchors the Stellar Swirl team and her skill and burst levels set the team ceiling. Voyanissa scales healing off max HP, so give her HP and recharge main stats. The reason to front-load Vesna is that trigger reliability decides whether the team functions at all, while healing gaps can be covered by a four-star healer for a while.
Genshin Impact 7.1 FAQ
Q: When does Stygian Onslaught end?
A: The event runs to 2026-11-03 03:59, and the burst window closes 2026-10-10 03:59, which is also when resin stops buying domain rewards.
Q: Is Vesna worth pulling?
A: This rotation's coffin mechanic rewards Electro and Anemo, and Vesna triggers Stellar Swirl and deals Stellar Swirl damage. Her banner ends 2026-10-13 17:59 .
Q: What does Voyanissa do?
A: She is a Hydro catalyst who heals and buffs in freeze and Stellar Swirl teams; stack HP and recharge on her.
Q: Can I swap teams between fights?
A: No. You must clear three consecutive timed fights, Fearless and Nightmare pay only for solo clears, and up to four players can join other difficulties .
Action Checklist
- Spend resin inside the burst window before 2026-10-10 03:59.
- Enter at Hard and unlock tiers one by one instead of jumping to Fearless.
- Keep an Electro or Anemo swap for the ice coffin.
- Concentrate Radiant Light buffs on fights two and three.
- Build Vesna before Voyanissa; trigger reliability sets the ceiling.
- This guide is revised on GameHub after each rotation.