Special Stages · Stage 1Aku Studies 401: Intro悪魔研究Ⅳ序論100Energy Cost8,930XP Reward860,000Enemy Base HP4,200Stage Length12Max Enemies9.4Difficulty Test your team vs this stageStage rewards100% — Catamin [A] ×3 · first clearEnemy spawns (8)EnemyStrengthCountFirst SpawnRespawnBase HP TriggerNotesB.B.Bunny4000%∞3.3s13.3s~16.7s100%—Sinner Snache500%2013.3s16.7s~20s100%—Cerberus Kids500%∞16.7s16.7s~23.3s100%—Star Peng2500%826.7s20s~26.7s100%—Project A2300%240s66.7s~70s100%—General GreGory2500%446.7s26.7s~30s100%—Sinner Snache500%2066.7s6s~8s100%—Ms. Sign100%∞900s900s100%—All Empress' Report 4 stages