Blueprint



"Meticulous architectural sketches of Hamlet structures."

- In-game description

Blueprint is Rare heirloom that is used to erect new buildings within the Districts of your once prospering Hamlet. Blueprint is an exceedingly valuable drop from Bosses, but one will be gifted to you on Week 10, allowing you to construct your first District building on the 10th Week regardless of your efforts to procure one. Blueprints do not drop from mini-bosses such as the Collector or the Shambler, making it fairly hard to amass in large quantities.

It must also be mentioned that Apprentice level Bosses don't drop Blueprints.

The "easiest" way to acquire it is by farming the Garden Guardian, which always drops it.