PROGRESSION MAP
Layers and boss gates
The official description confirms that each layer hides new content and has a guarding boss. A complete layer list, prices and boss stats are not publicly verified here.
SurfaceBuy steps with Cash
DescentFind upgrade rooms and Fossils
Layer gatePrepare for the guarding boss
Next layerReassess upgrades before spending
Evidence status board
Layer namesNot fully verified
Boss healthUnknown
Exact costsBuild/server dependent