Password to unlock cheat codes. (Patreon)

First, enable 'cheat codes'  in the settings menu (if you haven't already done so). After that, you should be able to see a circle holding a purple vial appear in the top right corner of your screen while you're playing the game. Click on that circle and type in the cheat code password that appears in the above image. Once you've done that, you should be able to see a cheat menu with a list of cheats whenever you click on that circle.