To claim these, you must first complete specific story milestones in Code Fairy and then use the system in both games. Mobile Suit Unlock Requirements
This is the holy grail. Achieve S Rank on all Vol. 3 missions to unlock the Efreet Jaeger . This is a 650-cost Raid type that dominates the high-cost meta. It is a sniper-Raid hybrid with a massive anti-ship rifle and "Smoke Discharger" for stealth.
To maximize the benefits of these codes:
This is where the best rewards live. Volume 3 requires you to finish the story. You will face a powerful Zeon Ace. The suits here are meta-defining.
Volume 2 ramps up the difficulty. You will face Zeon remnants, and the rewards shift to higher cost rooms (450-550).
Code Fairy changed the equation by acting as a standalone $40 (USD) expansion pack that directly interfaced with GBO2’s database. The game is a visual novel/third-person shooter hybrid set in the One Year War, following the titular "Code Fairy" team of Zeon pilots. The brilliance of Code Fairy lies in its unlock structure:
To unlock items, you must link your Code Fairy save data to the same Bandai Namco account used for GBO2 . Once linked, rewards are granted automatically upon completing specific missions or achieving certain battle ratings in Code Fairy .