NieR: Automata - Mysterious Letter Guide

NieR: Automata's 3C3C1D119440927 DLC unlocks three challenging colosseums after receiving a mysterious letter. Here's how to locate each:

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

The DLC introduces optional challenges and cosmetic rewards. Each colosseum features six ranks with progressively difficult enemies.

Trial of the Sand Colosseum

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

Gambler's Colosseum

Found in the Flooded City. Start at the "Flooded City: Coast" access point, following the path towards the coast (similar to the resource ship mission). At the end, locate a waterfall; circle around the building to the left to find a Resistance member guarding the entrance. Bribe him with 1,000G for access. Rank S completion grants the Revealing Outfit (2B).

Underground Colosseum

9S only. Located in the Forest Zone. From the "Forest Zone: Center" access point, follow the left edge of the forest to a group of machines training near a large waterfall. Pass through the waterfall to enter (only accessible as 9S). The Young Man's Outfit (9S) is the Rank S reward.