This project is more of a reverse engineering exercise than an ongoing mod project. I will try to keep it up to date with my latest findings on this awesome game!
You can download the mods archive from the GitHub Release section and you need to extract it in the %userprofile%\documents\CaptainOfIndustry\mods directory. Note that you must keep the directory structure for them to work (eg. the CheatMenu.dll file must reside in the CheatMenu directory).
That mod will gives you access to a menu exposing some cheats. Hit the F8 key to open the menu while inside a game.