NieR: Automata's 3C3C1D119440927 DLC unlocks three challenging colosseums after receiving a mysterious letter. Here's how to find each:
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The DLC introduces optional content 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 for an orange diamond-shaped structure. A machine guards the entrance, but poses no significant challenge. Completing Rank S rewards the Destroyer Outfit (A2).
Gambler's Colosseum
Accessible from the "Flooded City: Coast" access point. Follow the path to the coast (the same route used to protect the resource ship). At the end, locate a waterfall. Circle around the building to the left, finding a Resistance member guarding the entrance. A 1000G bribe unlocks the Gambler's Colosseum. Rank S completion grants the Revealing Outfit (2B).
Underground Colosseum
9S ONLY. Starting at the "Forest Zone: Center" access point, follow the forest's left edge to a group of training machines near a large waterfall. Pass through the waterfall to access the colosseum. The Rank S reward is the Young Man's Outfit (9S).
