During the event, complete the "Facing Distant Echoes" quest to unlock Act IV: Automaton Front. Complete the Domain challenge to obtain Thunder Crystals. Thunder Crystals can be used to redeem for rewards in the Event Shop.
|During the Thunder Sojourn event, Travelers can challenge the "Automaton Front" Domain. Defeat the Perpetual Mechanical Array to obtain precious Thunder Crystal.|
|Mechanisms such as Thunder Dwellings and Nimbus Gems will appear within this Domain. Use them wisely to defeat your opponents more easily!|
Completing the challenge rewards Thunder Crystal ×300.
|Ambush Attempts||DMG dealt to the Perpetual Mechanical Array|
|Attack the Attendants First!||DMG dealt to the enhanced Ruin machines|
|Aim and Obliterate!||Number of times the Ruin machines were paralyzed by attacking their weak points|
|Reverse Reaper||Number of times the enhanced Ruin machines were defeated|
|High Mobility Tactics||Not hit by an attack when the weak point of a Ruin machine is exposed|
|When Will This Bombardment End?||Number of times the Thunder Dwelling shockwaves were triggered|
|Saturation Attack||Number of times the Nimbus Gem shockwaves were triggered|
- Event Items that expire at the end of the Event: