Special Stages · Stage 1
Aku Studies 301: Intro
悪魔研究Ⅲ序論
Aku Studies 301: Intro is a Battle Cats stage in Empress' Report 3. It costs 100 energy and sends 11 enemy spawn lines — led by Teacher Bun Bun as the boss — against a 820,000 HP enemy base, and clearing it rewards 8,930 XP. Its enemies carry the Aku and Floating traits, so cats that target them do the most work here.
Data updated: 2026-08-31
100Energy Cost
8,930XP Reward
820,000Enemy Base HP
5,300Stage Length
10Max Enemies
9.3Difficulty
Enemy spawns (11)
| Enemy | Strength | Count | First Spawn | Respawn | Base HP Trigger | Notes |
|---|---|---|---|---|---|---|
 Sinner Snache | 500% | ∞ | 3.3s | 20s~23.3s | 100% | — |
 Cerberus Kids | 500% | 3 | 13.3s | 0.7s | 100% | — |
 Aku Doge | 500% | 2 | 23.3s | 10s~13.3s | 100% | — |
| Cerberus Kids | 500% | 3 | 33.3s | 0.7s | 100% | — |
| Aku Doge | 500% | ∞ | 0.1s | 23.3s~30s | 99% | — |
| Aku Doge | 500% | 15 | 0.1s | 10s~16.7s | 99% | — |
| Cerberus Kids | 500% | 10 | 0.1s | 13.3s~16.7s | 99% | — |
| Sinner Snache | 500% | 10 | 0.1s | 10s~13.3s | 99% | — |
 Mooth | 2400% | 3 | 0.1s | 83.3s | 99% | — |
 Teacher Bun Bun | 1500% | 1 | 0.1s | — | 99% | Boss |
 Ms. Sign | 100% | ∞ | 900s | 900s | 100% | — |