Underground Labyrinth · Stage 50

Underground B50F

地底50層

Data updated: 2026-07-24

400Energy Cost
2,256XP Reward
600,000Enemy Base HP
4,500Stage Length
5Max Enemies
9.1Difficulty
Build a lineup for this stage Test your team vs this stage

Stage rewards

100% — Catseye [Dark] ×1

Enemy spawns (5)

EnemyStrengthCountFirst SpawnRespawnBase HP TriggerNotes
Otta-smack-u400%310s20s~23.3s100%—
Those Guys3000%∞16.7s3.3s~10s100%—
Otta-smack-u400%1016.7s10s~13.3s99%—
Otta-smack-u100%116.7s—99%Boss
Dark Otter150%220s46.7s~50s99%—
All Underground Labyrinth: The Grand Deep stages