After you, Ranger, Accel, and Engi manage to defeat all 39 waves of the fallen army the commander warns you about a certain somebody but before you could even process the information commander gave you the Fallen king and 4 Fallen guardians come out of the entrances while also beings accompanied by Breaker3s, fallen angels, a fallen shield, a fallen honor guard and etc… Looks like it’s up to you to defeat fallen king once and for all.