Nightfall introduces two new underground locations where the stakes are high and tactics are essential.

HAGENTAL BASE - BATTLEFIELD 6
Plunge beneath the surface and prepare for gripping infantry-only close-quarters combat. Blast through walls or cave in ceilings to flank and ambush enemies lurking in the tunnels.

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DEFENSE TESTING COMPLEX 3 - FORT LYNDON - REDSEC
Infiltrate and advance. A secret chemical testing facility is operating beneath the surface of Fort Lyndon: a network of tunnels, ideal for both traversing the massive Californian battleground and fighting in high-stakes close-quarters combat. Gain the edge by claiming higher rarity loot placed within the new sector, and use it to master the darkness.

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