Shiyu Defense

Shiyu Defense is a Game System and a periodic military operation organized by the New Eridu Defense Force. Its primary objective is to defend inert-type massive Ether-storing constructs known as "Shiyu Pillars" located within Hollow Zero and to annihilate enemies attracted by the substantial amounts of Ether matter within the Shiyu Pillar.

Unlock Requirements

Since Version 2.5, in order to unlock Shiyu Defense, the player needs to have reached Inter-Knot Level. 35, been promoted to "Certified Proxy", then have completed Shiyu Defense (Commission).

Event Details

• Shiyu Defense is a high-difficulty challenge stage where you must defeat all enemies within a limited time to complete the challenge.
• There are 4 defense modes in Shiyu Defense:
  • Stable Nodes: Unlocked one by one as you progress through the challenges. Does not refresh.
  • Disputed Nodes: Unlocked one by one as you progress through the challenges. Does not refresh.
  • Critical Nodes: Periodically updates with new stage content. Refreshes every 15 days.
  • Ambush Nodes: Not currently available. Available for 30 days.
• Earn rewards of different tiers based on completion time, including Polychrome and Master Copies.

Achievements

There are 9 Achievements related to Shiyu Defense:

	Achievement	Description	Requirements	Reward
	Into the Chaos	Clear the Stable Node: Sixth Frontier in Shiyu Defense.			5
	The Depths of the Deep	Clear the Stable Node: Tenth Frontier in Shiyu Defense.			5
	Crisis Frontline	Clear the Critical Node: Third Frontier in Shiyu Defense.			5
	The Vanguard	Clear the Critical Node: Fifth Frontier in Shiyu Defense.			5
	Deep Into Restricted Area	Clear all Critical Node Frontiers in Shiyu Defense.			5
	Elite Investigator	Clear the Stable Nodes in Shiyu Defense with an A-Rank rating on all floors.			10
	Conflict Terminator	Clear the Disputed Node: Eighth Frontier in Shiyu Defense.	ù	Title: Troubleshooter	10
	I'm Shiyu	Clear all Frontiers with an S-Rank rating in Critical Node of Shiyu Defense.		Shiyu Defense: Adaption	20
	Like It's Your Backyard	In Shiyu Defense, clear the Fifth Frontier of Critical Node with an S+ rating.		Title: Leisurely Stride	20

Other Languages

Language	Official Name
English	Shiyu Defense
Chinese (Simplified)	式舆防卫战 Shìyú Fángwèizhàn
Chinese (Traditional)	式輿防衛戰 Shìyú Fángwèizhàn
Japanese	式輿防衛戦 Shikiyo bōeisen
Korean	시유 방어전 Siyu Bang'eojeon
Spanish	Defensa shiyu
French	Défense de Shiyu
Russian	Оборона шиюй Oborona shiyuy
Thai	Shiyu Defense
Vietnamese	Bảo Vệ Trụ Shiyu
German	Shiyu-Verteidigung
Indonesian	Shiyu Defense
Portuguese	Defesa Shiyu

Change History

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