Crystal Cluster Valley is a solo PvP event on a separate map. In 30 minutes you need to gather as many crystals as possible: capturing mines, defeating Plague Rats, and fighting over special points.
The event provides separate troops, based on your Barracks’ max level. These soldiers don’t die permanently, so this is a good place to try more aggressive routes and attacks.
Opening moves
In the first few minutes it pays to hunt Plague Rats. They drop skill crystals that unlock temporary valley buffs. All such buffs disappear once the current run ends.
After buffing up, switch to the mines. You can’t attack unclaimed territory, but you can fight over a mine held by another player. A losing streak gives debuffs, so don’t throw your squad into fights you’re clearly going to lose.
Special points
Instant crystal mines appear during the match, and closer to the end a Sacred Cave opens in the center. Their exact schedule is visible on the current run’s timer — keep a free teleport ready for when an important target appears far from you.
Duration, the separate troop pool, and the general target order were checked against the Crystal Cluster Valley guide on lastasylumguides.com. Exact spawn intervals and rewards are best checked in-game before each match.