Collaboration Gauntlets · Stage 4MISSION 4100Energy Cost8,930XP Reward300,000Enemy Base HP4,500Stage Length15Max Enemies7.2Difficulty Test your team vs this stageStage rewards100% — XP ×250,000 · first clear · Treasure RadarEnemy spawns (8)EnemyStrengthCountFirst SpawnRespawnBase HP TriggerNotesMARS PEOPLE (Enemy)1200%∞3.3s33.3s~40s100%—MARS PEOPLE (Enemy)1200%34.7s6.7s~13.3s100%—MARCO (Enemy)1200%∞6.7s40s~60s100%—SV-001 (Enemy)1133%113.3s—100%—HUGE HERMIT (Enemy)667%153.3s—100%—DONALD MORDEN (Enemy)111%166.7s—100%—SV-001 (Enemy)1133%30s3.3s99%—SOL DAE ROKKER (Enemy)434%120s—100%BossAll METAL SLUG STRIKES! stages