Collaboration Stages · Stage 1
Something I Must Do
私には成すべきことがある
Something I Must Do is a Battle Cats stage in Final Battle: EVA Unit-13. It costs 100 energy and sends 6 enemy spawn lines — led by EVA Unit-13 (Enemy) as the boss — against a 300,000 HP enemy base, and clearing it rewards 14,100 XP.
Data updated: 2026-08-31
100Energy Cost
14,100XP Reward
300,000Enemy Base HP
5,000Stage Length
20Max Enemies
6.2Difficulty
Enemy spawns (6)
| Enemy | Strength | Count | First Spawn | Respawn | Base HP Trigger | Notes |
|---|---|---|---|---|---|---|
 EVA Unit-13 (Enemy) | 20% | 1 | 3.3s | — | 100% | Boss |
 Squire Rel | 600% | 2 | 10s | 16.7s~23.3s | 100% | — |
 Croco | 600% | ∞ | 10s | 23.3s~26.7s | 100% | — |
 Baa Baa | 600% | ∞ | 20s | 36.7s~43.3s | 100% | — |
| Squire Rel | 600% | ∞ | 46.7s | 25.3s~26.7s | 100% | — |
| Squire Rel | 600% | ∞ | 50s | 25.3s~26.7s | 100% | — |