Underground Labyrinth · Stage 15Underground B15F地底15層30Energy Cost1,692XP Reward350,000Enemy Base HP5,600Stage Length6Max Enemies8.3Difficulty Test your team vs this stageStage rewards50% — XP ×200,000 · Treasure RadarEnemy spawns (5)EnemyStrengthCountFirst SpawnRespawnBase HP TriggerNotesDoge1800%∞13.3s6.7s~13.3s100%—Zroco200%420s30s~33.3s100%—Aku Doge300%∞23.3s36.7s~40s100%—Zackie Peng200%336.7s23.3s~26.7s100%—Doge1800%1080s6.7s~13.3s100%—All Underground Labyrinth: The Grand Deep stages