This article contains unmarked spoilers for Book 4.
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Engineer's Key is an Item on the Fourth Floor that allows access to the engineer's compartment on the Iron Tangle. It is one of two ways to pass through the Abyss Station Portals to get to the Train yards.
Story
Book 3
Carl first becomes aware of the Engineer's Key on the Red Line when he tries to access a service panel. [1] He later acquires a key from Gore-Gore.
References
- ↑ Dinniman, Matt. The Dungeon Anarchist's Cookbook (Chapter 1)