Special Stages · Stage 2Aku Studies 401: Methods悪魔研究Ⅳ方法Data updated: 2026-07-24100Energy Cost8,930XP Reward850,000Enemy Base HP5,400Stage Length12Max Enemies9.4Difficulty Build a lineup for this stage Test your team vs this stageStage rewards100% — Catseye [Legend] ×1 · first clearEnemy spawns (10)EnemyStrengthCountFirst SpawnRespawnBase HP TriggerNotesDuche1000%106.7s20s~26.7s100%—Squire Rel100%113.3s—100%BossCroakley100%213.3s63.3s~70s100%—Squire Rel4000%∞16.7s10s~13.3s100%—Miz Devil300%∞20s16.7s~23.3s100%—Aku Doge500%1233.3s26.7s~30s100%—Aku Gory200%553.3s36.7s~40s100%—Aku Gory200%3120s20s~26.7s100%—Miz Devil300%15133.3s6.7s~13.3s100%—Ms. Sign100%∞900s900s100%—All Empress' Report 4 stages