The Azure Twin is another Bond-focused side mission in Fire Emblem Engage where you will be facing off against Emblem Eirika in a reproduction of a key battle from Fire Emblem The Sacred Stones.

This page of IGN's Fire Emblem: Engage wiki guide contains a walkthrough of Chapter 12 - The Sentinels. This walkthrough will take you through all the new unlockables, Characters, Emblems ...