Special Stages · Stage 4Feathergeddon: Swan Song (Brutal)一石三鳥決戦 神ムズ200Energy Cost18,800XP Reward2,000,000Enemy Base HP5,000Stage Length20Max Enemies12.1Difficulty Test your team vs this stageStage rewards100% — Paperboy Cat · first clearEnemy spawns (9)EnemyStrengthCountFirst SpawnRespawnBase HP TriggerNotesDoge Dark1440%∞3.3s33.3s~40s100%—Doge Dark1440%610.7s80s~86.7s100%—Shadow Boxer K360%∞26.7s53.3s~60s100%—Sir Seal4800%20s6.7s~10s100%—One Horn6000%∞3.3s63.3s~70s100%—Bore Jr.180%∞100s26.7s~33.3s100%—R.Ost360%1113.3s—100%—Commander Ostromeda200%1186.7s—100%—Poultrio100%133.3s—100%Boss (shockwave)All Invasion of Poultrio stages