Zero Legends · Stage 2
No-Returns Library
返却なき図書館
No-Returns Library is a Battle Cats stage in Forgotten Republic. It costs 210 energy and sends 10 enemy spawn lines — led by Golem Sunfish as the boss — against a 2,000,000 HP enemy base, and clearing it rewards 506,331 XP. Its enemies carry the Aku, Black, Sage, Floating and Relic traits, so cats that target them do the most work here.
Data updated: 2026-08-31
210Energy Cost
506,331XP Reward
2,000,000Enemy Base HP
5,000Stage Length
20Max Enemies
12.1Difficulty
Enemy spawns (10)
| Enemy | Strength | Count | First Spawn | Respawn | Base HP Trigger | Notes |
|---|---|---|---|---|---|---|
 Cerberus Kids | 720% | 3 | 3.3s | 6.7s~13.3s | 100% | — |
 Doge Dark | 1440% | 2 | 13.3s | 6.7s~13.3s | 100% | — |
 Dogenstein | 100% | 1 | 16.7s | — | 100% | — |
 Shadow Boxer K | 360% | 1 | 33.3s | — | 100% | — |
| Shadow Boxer K | 360% | 2 | 0s | 46.7s~53.3s | 99% | — |
| Dogenstein | 100% | 5 | -3.3s | 26.7s~33.3s | 99% | — |
 Golem Sunfish | 120% | 1 | 0s | — | 99% | Boss |
 Deathkory | 120% | 1 | -6.7s | — | 99% | — |
| Cerberus Kids | 720% | 8 | -10s | 6.7s~13.3s | 99% | — |
| Doge Dark | 1440% | ∞ | -80s | 20s~26.7s | 99% | — |