Legends of Sera achievement in Gears of War 4

How to unlock the Legends of Sera achievement in Gears of War 4: Complete all Campaign Acts on Ironman in Co-op on Hardcore or higher difficulty

Gears of War 4's September update packs new maps, achievements, and more

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Gears of War 4] Legends of Sera Achievement - Cheese/Glitch Tutorial

Legends of Sera achievement in Gears of War 4

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Captain Sera Achievement in Gears of War: Judgment