To beat Avenger Knight and Death Castle in Episode Aigis: The Answer, there are a few key things for Persona 3 Reload to keep in mind in terms of weaknesses, resistances, and strategy. A tough double-boss battle on the B20 floor of Antenora dungeon within the Abyss of Time is arguably the trickiest battle in the DLC so far. With that, your team needs to consist of the right members.