NieR: Automata - Mysterious Letter Guide

NieR: Automata's 3C3C1D119440927 DLC unlocks three challenging colosseums after receiving a mysterious letter. This guide details their locations and Rank S rewards.

Quick Links

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

The 3C3C1D119440927 DLC, available in all editions, introduces optional content and cosmetic rewards. Progressing the game slightly triggers a mysterious letter containing coordinates for three colosseums, each with six progressively difficult ranks.

Trial of the Sand Colosseum Location

Located in the desert, access this colosseum from the Desert: Center access point. Zoom out and look right (facing the desert entrance) for an orange diamond. A machine guards the entrance, but poses no significant threat. Completing this quest unlocks rewards.

• Rank S Reward: Destroyer Outfit (A2)

Gambler's Colosseum Location

Start at the Flooded City: Coast access point. Follow the path to the coast (the same route used to guard the resistance's resource ship). At the end, locate a waterfall to the right. Circle around the left side of the building to find a Resistance member guarding the entrance. A 1,000G bribe grants access.

• Rank S Reward: Revealing Outfit (2B)

Underground Colosseum Location

9S only.

Begin at the Forest Zone: Center access point. Follow the left forest edge until you reach machines training near a large waterfall. Pass through the waterfall to access the colosseum (only accessible as 9S).

• Rank S Reward: Young Man's Outfit (9S)