When I, and the developer, mentioned “Prototype”, we’re referring to the prototype already listed in the download (IndulgeMe_Prototype.zip), which is made in Unity than GDevelop.
It only contains the boss rooms, like Bayla, Rubianne, Sierra (Upcoming boss in the Demo), and that one Raccoon girl I love so much. The main objective is to survive for a specified amount of time, and the controls are primitive compared to the demo version.