Special Stages · Stage 6Ruins of the North北の廃墟Data updated: 2026-07-24110Energy Cost15,510XP Reward450,000Enemy Base HP3,800Stage Length20Max Enemies8.1Difficulty Build a lineup for this stage Test your team vs this stageEnemy spawns (7)EnemyStrengthCountFirst SpawnRespawnBase HP TriggerNotesSir Seal1500%480.1s0.7s~2s99%—Sir Seal1500%240.1s0.7s~2s99%—Sir Seal1500%120.1s0.7s~2s99%—Bore250%10s—99%BossSir Seal1500%∞16.7s3.3s~10s100%—Sir Seal1500%210s0.7s100%—Ms. Sign100%∞900s900s100%—All The March of Flames stages