We are aware of players’ concerns over the most recent Challenge of the Brave's difficulty level, especially considering that numerous clears are required to obtain enough Brave Insignia (Transcendent Heroes) from the quest.
While this high level of difficulty was planned alongside alternate ways to obtain the Brave Insignia (such as the inclusion of other global quests and exchange shops that offer the same insignia), we will definitely apply this feedback to future Challenge of the Brave content.
We truly value your feedback and look forward to providing more exciting and fun content for everyone.
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FINAL FANTASY BRAVE EXVIUS