The Key to the Market is required to open a special room in the Sea of Trees in Thymesia. This is dropped by a particular enemy who is close to the door. Players will encounter a mini-boss that wields a spear up the stairs. Once players unlock the door, they can obtain useful information to shape the game's lore and even figure out how to achieve different endings.
Where to find the key to the Market's Secret Room in Thymesia
From the entrance to the room, players just have to head up the ladder and defeat the mini-boss wielding a spear to get their hands on the key. Thymesia has many of these enemies throughout the game, and many of them will drop important items like Shards, Alchemy Enhancers, and Ingredients. Defeating the spear-wielding enemy can be difficult, so players should take their time to learn the patterns and chip at their health.
How to unlock more dialogue from Emerald in Thymesia
Emerald is an NPC found in the Secret Room of the Sea of Trees that will provide insight into the game's lore. Throughout Thymesia's levels, players will obtain items from the various bosses in the game. Obtaining these Cores is a vital part of getting the game's endings. Figuring out how to obtain the ending requires insight from both Emerald and Aisemy. A combination of Cores is required to unlock the different endings of the game, and knowing the right combination will require learning as much about these Cores from both NPCs.
For more Thymesia guides, check out How to get through the brown poison in Thymesia on Pro Game Guides.