Unlocking the free Aqua unit in ASTD X is one of the most valuable opportunities during the limited-time Blue Temple dungeon event. This guide will walk you through every requirement, dungeon mechanic, and proven strategy for maximizing rewards—including how to farm gems and rerolls, set up your best squad, and secure your chance at the exclusive Aqua unit before it disappears from the game.
How to Unlock the Blue Temple Dungeon in ASTD X
The Blue Temple dungeon is the only place to obtain the free Aqua unit in ASTD X. You can find the Blue Temple behind the Gold Shop, marked by its tall pillars. Entry to the dungeon is locked until you meet the main story requirements: complete all story mode chapters from Story 1 through Story 4, including the entire Naruto arc. Once these requirements are fulfilled, the temple doors will open, granting you access to the countdown area for the event dungeon.
Dungeon Mechanics and Rewards
The Blue Temple dungeon opens every 4 hours and remains active for a 30-minute window. During this window, players can enter and complete as many dungeon runs as possible. After each clear, you are instantly sent back to the dungeon lobby, so you can quickly restart another run within the time limit.
Every stage clear rewards 100 gems. If you play as part of a full squad and manage to earn MVP, your reward doubles to 200 gems per stage clear. Besides gems, there is also a chance to receive the exclusive Aqua unit as a random drop. Additional loot includes trait rerolls, stat rerolls, and gold, making each run highly rewarding.
Efficient teams can earn 1,000–2,000+ gems in a single dungeon session by clearing as many runs as possible in 30 minutes. Because Aqua is a time-limited reward, maximizing your runs is essential if you want to secure this exclusive unit before it’s removed in the next update.
Best Strategies for Farming Gems and the Aqua Unit
To maximize your results in the Blue Temple dungeon, follow these practical strategies:
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Use orange-element units. Every enemy in the dungeon is purple-type, making orange units deal 100% bonus damage. Prioritize building your squad around your best orange-element units for maximum efficiency.
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Join a full squad. Clearing dungeons with a full team not only makes each run faster but also increases your chance of becoming MVP, which boosts your gem rewards to 200 per clear. Communication and teamwork are key.
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Monitor the dungeon timer. The dungeon operates on a strict schedule, opening every 4 hours and staying active for only 30 minutes. The game does not provide a countdown notification, so use a banner stream or external timer to track dungeon openings and maximize your participation.
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Aim for 10 or more runs per session. Efficient teams can complete at least 10 runs within the 30-minute window, accumulating approximately 2,000 gems and multiple opportunities for Aqua drops and reroll items.
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Target Aqua drops early. Since Aqua is a limited-time reward, it’s important to prioritize farming during every available dungeon window until you secure the drop. Missing the event means losing the chance to get Aqua permanently.
Tips for Efficient Dungeon Runs
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Prepare your squad ahead of the event window to save time between runs.
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Focus fire on boss waves using orange units for faster clears.
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Farm trait and stat rerolls in addition to Aqua for overall account improvement.
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Stay in communication with your team for smoother runs and MVP chances.
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If you want more gold, prioritize runs with full squads for bigger rewards.
Why Aqua and the Blue Temple Dungeon Matter
Aqua is an exclusive, time-limited unit that is only available during this special event window. Once the update cycle ends, Aqua will be removed from all future drop pools, making this your only chance to obtain it for your collection. The Blue Temple dungeon is not just about Aqua—it’s also the most efficient source of gems, rerolls, and gold in the game right now. Farming here is essential for progression, upgrades, and keeping up with the competitive meta in ASTD X.
Final Thoughts
Securing the free Aqua unit in ASTD X requires planning, coordination, and quick action. Complete all story modes up to Story 4, prepare your strongest orange units, and gather a full squad to maximize your dungeon rewards. Track dungeon times carefully using external timers, aim for multiple runs in each session, and don’t miss your opportunity to earn the Aqua unit and stockpile gems before the event ends. The Blue Temple dungeon is your ticket to rare loot and exclusive units, so make every minute count.