NieR: Automata's 3C3C1D119440927 DLC unlocks three challenging coliseums after receiving a mysterious letter. This guide details their locations and Rank S rewards.
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The DLC introduces optional content and cosmetic rewards. The letter provides coordinates leading to these coliseums, each featuring six increasingly difficult ranks.
Trial of the Sand Colosseum Location
Located in the desert, access this coliseum from the Desert: Center access point. Zoom out and locate the orange diamond structure to the right of your entry point. A machine guards the entrance, but poses no significant threat. Completing the Trial of the Sand Colosseum quest awards the Destroyer Outfit (A2) for Rank S.
Gambler's Colosseum Location
Starting from the Flooded City: Coast access point, follow the path to the coast (the same route used to guard the resource ship). At the end, locate a waterfall to the right. Circle around the building to the left of the waterfall to find a Resistance member guarding the entrance. A 1,000G bribe unlocks access to the Gambler's Colosseum quest. The Rank S reward is the Revealing Outfit (2B).
Underground Colosseum Location
This coliseum is only accessible as 9S.
Begin at the Forest Zone: Center access point. Follow the left edge of the forest until you encounter machines training near a large waterfall. Pass through the waterfall to access the Underground Colosseum quest. The Young Man's Outfit (9S) is the Rank S reward.