Gauntlets · Stage 16Duel Under the Sea (Vanguard)海底の決闘 先鋒Data updated: 2026-07-24300Energy Cost26,790XP Reward300,000Enemy Base HP4,000Stage Length1Max Enemies9.1Difficulty Build a lineup for this stage Test your team vs this stageStage rewards100% — XP ×500,000 · first clear · Treasure RadarEnemy spawns (4)EnemyStrengthCountFirst SpawnRespawnBase HP TriggerNotesChickful A200%16.7s—100%BossLe'noir100%13.3s—100%BossMetal One Horn200%10s—100%BossAssassin Bear1000%∞900s900s100%—All Duel Stages Challenge stages