Collaboration Stages · Stage 7Impregnable Fortress不落の移動要塞90Energy Cost12,690XP Reward8,000Enemy Base HP6,000Stage Length5Max Enemies2.1Difficulty Test your team vs this stageEnemy spawns (7)EnemyStrengthCountFirst SpawnRespawnBase HP TriggerNotesThose Guys100%40s2s~3.3s100%—Croco100%∞13.3s22.7s~25.3s100%—Guile (Enemy)2%126.7s—100%BossThose Guys100%∞46.7s15.3s~18.7s100%—Gory100%366.7s32s~35.3s100%—Kang Roo100%180s—100%—Ms. Sign100%∞900s900s100%—All Street Fighter (Easy) stages