ZZZ 2.4 Shiyu Defense Reset Dec 19: T0 Teams for S-Rank 720 Poly

Shiyu Defense Critical Node drops every other Friday—next one's December 19, 2025. Nail S-Rank with >300s left on stages 11-17 using T0 squads: Dialyn on stun (Ice Rupture/Fire Chain), Yixuan as Ether DPS, Astra holding support. Buffs crank it up: +50% Stun DMG, +60% EX/Ult DMG. Fastest clears? 1m59s. Payout: 720 Polychromes. (52 words)

Diving into Shiyu Defense in ZZZ 2.4

Picture this: you need 6 Agents and 2 Bangboos spread across 7 Frontiers, unlocked post-Inter-Knot Rank-Up Level 20 at Stable Node Tenth Frontier. S-Rank demands >300s on Stage 1 (First Frontier), A-Rank >180s, B-Rank just full clears. Tough nuts on 11-17? Ionized Cyrtoidea hits first half of 11, Fossor and Sordidus on 13/15. Get there by hitting Inter-Knot Level 50, deploying attribute-matched teams, and leaning hard into Stun for those juicy +50% Stun DMG and +60% EX/Ult DMG buffs. Reset looms December 19, 2025—data from 28,019 players in 2.4.1 peaks right after.

Shiyu Defense Reset Calendar and Clear Goals – December 2025

Every other Friday. Next: December 19, 2025. S-Rank? >300s First Frontier. Phase II buffs stack nice—Sheer DMG +15%, Fire/Ice DMG +20%, CRIT DMG +5% (up to 10x for 10s). Rewards stack too: 720 Polychromes (90 per Frontiers 1-4, 120 per 5-7), 315k Denny, 4 W-Engine Chips, 20 NRMC. Quick plan: (1) Eye the calendar before Dec 19; (2) Chase Rank 1 (30 Polychromes/20k Denny); (3) Stalk leaderboards for DA 20k+ on dual stages. Upper buffs shine—1st Physical Anomaly +20%/Assault DMG +80%; 7th Decibel +50%/Ultimate +120%.

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Top Agent Tiers and Roles Crushing 2.4 Shiyu Defense

T0 kings: Dialyn (Stun), Yixuan (Rupture DPS), Astra (Support), Ju Fufu (T0.5 off-field Stun), Yidhari (T0.5 Ice Rupture), Orphie (T0), Lucia (Ether Support). Stun pecking order: T0 Dialyn > T1 Ju Fufu > T2 Lycaon/Qingyi. DPS: T0 Yixuan/Hoshimi Miyabi > T1 Yidhari. Support: T0 Astra/Vivian > T1 Lucy. Fun stat—77.5% of 2.4.1 clears rock limited S-Ranks. Build smart: (1) Pump CRIT Rate/DMG on DPS; (2) ER on supports; (3) Slot T0 Stunners for that +50% Stun DMG edge.

Tiers at a glance:
T0 Stun: Dialyn
T0 DPS: Yixuan, Miyabi
T0 Support: Astra, Lucia
T0.5/T1 Stun: Ju Fufu, Yidhari
T0.5/T1 DPS: Jane Doe, Piper
T0.5/T1 Support: Vivian, Soukaku  

Standard team: 1 DPS + 2 Supports/Stuns. Rupture hits via Disorder—pure synergy.

Best Teams to Dominate Shiyu Defense Stages 11-17 in 2.4

Stage 11: Ether first, Physical-Ice second—Yixuan/Dialyn/Lucia owns it.  

Stage 17 first: Ice Rupture (Lycaon/Lucia/Yidhari/Miss Esme vs Haytor). Second: Fire Chain (Dialyn/Astra/Evelyn/Snap vs Guardian/Miasmic Defector).  

Others? 12: Ether/Ice-Physical/Fire (Arlaune/Tyrfing); 13: Ether/Ice-Ether (Fossor/Mandrake); 14: Ether/Ice-Physical/Ice; 15: Ether-Physical/Fire; 16: Ether/Ice-Physical/Fire.  

For 17: (1) Dodge Haytor flurries, stun the Ice hard; (2) Hug Guardian range, sidestep Miasmic Counter; (3) Time EX/Ultimates in the +60% window.  

Top 5 comps that deliver:  

• Ether Rupture: Yixuan + Dialyn + Lucia.  

• Ice Rupture: Lycaon/Lucia/Yidhari/Miss Esme.  

• Fire Chain: Dialyn/Astra/Evelyn/Snap.  

• Anti-Ice/Physical: Hoshimi Miyabi/Yixuan/Dialyn/Lighter/Astra/Soukaku.  

• Anti-Ether: Yixuan/Zhu Yuan/Dialyn/Ju Fufu/Lucia/Pan Yinhu.

(Editor's aside: Yixuan feels unstoppable on Ether nodes—my clears confirm it, shreds like butter.)

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Clear Benchmarks and Pro Strategies

2.4.1 leaderboards: M0RX at 1m59s, rest from 2m03s to 10m56s (28,019 players, updated 05/12/2025). Aim <150s tiers, DA 20k+ via Swap Cancels—25,369 self-reports, 2,650 UIDs tracked. Play it right: (1) Match node attrs upfront; (2) Dodge early Frontier effects; (3) Stun to trigger buffs, smash S/A/B goals. Weave dodges on flurries. Skip Electric on Fire/Physical. Stun Agents? Mandatory. CRIT DPS carries, ER supports sustain.

Rewards Breakdown – Max 'Em Out

Full clear hauls 720 Polychromes, 315k Denny. Per-stage Rank 1: 30 Poly/20k Denny; Rank 2: 30/15k; Rank 3: 30/10k. Frontiers 1-4: 90 Poly/45k each; 5-7: 120 Poly/45k. Toss in 4 W-Engine Chips, 20 NRMC. Optimize: (1) S-Rank First Frontier >300s; (2) Wipe all; (3) Grind bi-weekly after Dec 19.

FAQ – Quick Hits on Shiyu Defense

Next Critical Node reset?
December 19, 2025—every other Friday.

Stage 17 first half beast-mode team?
Ice Rupture: Lycaon/Lucia/Yidhari/Miss Esme. Dodge those Haytor flurries with Ice/Stun lockdown.

Ultimate Stun agent for 2.4?
Dialyn (T0)—milks that +50% Stun DMG for all it's worth.

S-Rank time cutoff?  

300s remaining on First Frontier. Leaders hit 1m59s.

Full clear loot total?
720 Polychromes, 315k Denny, 4 Chips, 20 NRMC.

Critical Node buffs that slap?
+50% Stun DMG, +60% EX/Ult, Phase II Fire/Ice +20% DMG.