Impregnable Fortress
Stage details
- Difficulty
- ★6
- Energy
- 160
- XP
- 4,800
- Base HP
- 200,000
- Length
- 4,400
- Max enemies
- 40
Timed score rewards
- 6,500 ptsSniper the Cat
- 4,000 ptsCat Ticket
- 500 pts75,000 XP
Enemies
- From the start


- When the base drops to 99%




| Enemy | Spawns | HP | Damage | Range | Details |
|---|---|---|---|---|---|
| From the start | |||||
| At 6.7s | 40,000 | 2,800955 DPS | 340 | ||
| At 6.7s3 total, every 13.3–20s | 20,000 | 6,0001,552 DPS | 340 | ||
| When the base drops to 99% | |||||
| Instantly | 360,000 | 9,4502,363 DPS | 420 | ||
| InstantlyUnlimited, every 30–40s | 20,000 | 6,0001,552 DPS | 340 | ||
| Instantly3 total, every 20s | 20,000 | 6,0001,552 DPS | 340 | ||
| Instantly | 144,000 | 11,7003,774 DPS | 150hits 340 behind to 340 | ||
Like most stages, this one also sends a Ms. Sign if the battle goes past 15 minutes.