Collaboration Stages · Stage 2
Promises Kept
約束を守り裏切らない
Promises Kept is a Battle Cats stage in Green Hill Zone. It costs 50 energy and sends 7 enemy spawn lines — led by Sonic (Enemy) as the boss — against a 7,000 HP enemy base, and clearing it rewards 7,050 XP.
Data updated: 2026-08-31
50Energy Cost
7,050XP Reward
7,000Enemy Base HP
5,500Stage Length
20Max Enemies
2.1Difficulty
Enemy spawns (7)
| Enemy | Strength | Count | First Spawn | Respawn | Base HP Trigger | Notes |
|---|---|---|---|---|---|---|
 Snache | 100% | ∞ | 3.3s | 33.3s~46.7s | 100% | — |
 Those Guys | 100% | 3 | 20s | 6.7s~10s | 100% | — |
 Sonic (Enemy) | 10% | 1 | 33.3s | — | 100% | Boss |
 Jackie Peng | 100% | 1 | 56.7s | — | 100% | — |
| Those Guys | 100% | 3 | 53.3s | 0.7s~1.3s | 100% | — |
 Hippoe | 100% | 1 | 66.7s | — | 100% | — |
 Ms. Sign | 100% | ∞ | 900s | 900s | 100% | — |