Airren All Star Tower Defense X is a unique unit with two distinctive forms—Summon Form and Attacker Form—but is it really worth your investment? This review breaks down Airren’s strengths, weaknesses, best uses, recommended traits, and practical strategies for both Infinite and Story Mode. Find out if Airren deserves a spot in your team or if your resources are better spent elsewhere.
Airren’s Forms – Summon and Attack Explained
Airren stands out in ASTDX with its dual-mode mechanics. Upon placement (with a high initial cost of 50,650), players can switch between two modes:
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Summon Form: Airren continuously summons minions to attack enemies. This form is especially effective for Infinite Mode, as the constant stream of minions helps hold back waves of enemies and supports long-term defense.
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Attacker Form: Activating Airren’s “giantification” ability transforms it into a giant with a full-area (Full AoE) attack, dealing large area damage to multiple targets. This form is more suitable for Story Mode, where fast wave-clearing is essential.
Each form features its own upgrade levels, but these do not transfer when switching forms. There’s a 40-second cooldown when toggling between modes, so plan your transitions carefully.
Airren Strengths and Weaknesses
Airren’s basic stats include low base damage, decent range, high attack speed, and the ability to summon minions with strength up to 20,000. The minion summon rate remains stable throughout its use. Upgrading Airren in Attacker Form increases its damage, range, and upgrades the attack to a wider circular AoE.
Best trait for Airren is “Allstar,” which helps maximize its effectiveness. However, only one mode’s upgrades are active at any time, and upgrades reset upon mode change. Airren can only be sold while in death mode, not during active combat.
While the Summon Form works well for farming in Infinite Mode, and the Attacker Form is strong for Story Mode wave clears, these advantages come with important downsides. The high initial cost, cooldown between forms, and lack of persistent upgrades make Airren less flexible than other options. Community and player reviews consistently rank Airren low, often at the bottom of B-Tier, citing disappointment with its overall performance.
How to Use Airren in Infinite and Story Modes
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Use Summon Form exclusively in Infinite Mode for sustained minion support against endless waves.
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Switch to Attacker Form in Story Mode for powerful AoE attacks to clear waves quickly.
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Remember that upgrades are form-specific and do not carry over—plan upgrades based on your chosen mode.
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Always keep track of the 40-second cooldown before switching forms.
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Only sell Airren in death mode—not while actively attacking.
If you’re looking for versatility or strong late-game damage, consider other units before investing resources in Airren.
Airren Tier List Ranking and Final Review
In most community tier lists, Airren sits at the lower end of B-Tier. While the dual-form system is unique and the minion summoning can help in certain scenarios, Airren is widely considered a disappointment for its cost and lack of efficiency compared to other top units. Players often regret investing heavily in Airren when there are more powerful, cost-effective choices available.
Final Thoughts
Airren All Star Tower Defense X offers interesting mechanics with its Summon and Attacker Forms, but its practical value is limited by high costs, cooldowns, and underwhelming performance. For Infinite Mode, the Summon Form is useful, while the Attacker Form provides strong AoE in Story Mode. However, better options exist for both modes. If you want to maximize your team’s strength and resource efficiency, it’s best to skip Airren and focus on higher-tier units for the long run.