The debug menu can be opened/closed by pressing the F12
key in any scene after the startup cutscene. The menu will show a list of premade save points on the left side of the panel and a description of the selected save point on the right. The game can be restored to the selected save point by pressing the load button in the lower left corner of the panel.
Save points can be simply added to the menu by following the listed steps:
%AppData%\\..\\LocalLow\\DefaultCompany\\24-25 Production
CriticalDensity.json
to the Assets\\Saves
folder in the unity projectMainMenu
scene and duplicate one of the existing save point buttons (layout should be automatic)