[Arknights]Phantom & Crimson Solitaire Secret Ending boss fight

[Arknights]Phantom & Crimson Solitaire Secret Ending boss fight

The third and the last ending of the whole event, showing how Phantom lost sanity in the castle.
Atk speed boosting relics still work like a charm, probably the most universal and strongest.

#Arknights #Roguelike