Unravel the Secrets: Discover the Elusive Letters in NieR: Automata

NieR: Automata's 3C3C1D119440927 DLC unlocks three challenging colosseums. After receiving the mysterious letter, use these guides to locate them:

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• Trial of the Sand Colosseum
• Gambler's Colosseum
• Underground Colosseum

The DLC adds optional content and cosmetic rewards. Each colosseum features six increasingly difficult ranks.

Trial of the Sand Colosseum

Located in the desert. From the "Desert: Center" access point, look right (facing the desert entrance) for an orange diamond-shaped structure. A machine guards the entrance, but poses no threat. Completing Rank S rewards the Destroyer Outfit (A2).

Gambler's Colosseum

Accessible from the "Flooded City: Coast" access point. Follow the path towards the coast (the same route used to protect the resource ship). At the end, find a waterfall. Circle around the building to the left to find a Resistance member guarding the entrance. Bribe him with 1,000 G to enter. Rank S completion unlocks the Revealing Outfit (2B).

Underground Colosseum

9S only. Start at the "Forest Zone: Center" access point. Follow the forest's left edge until you find machines training near a large waterfall. Pass through the waterfall to access the colosseum. The Young Man's Outfit (9S) is the Rank S reward.