In order to do something with the Mind-Control system. I have implemented it's resource 'Life Essence' now just to close the loop on this part of the game and give an indicator for the main resource for progression moving forward.

Life Essence will now be the best way to see your progress. This will be expanded on in future updates.

For now. If you are generating Life Essence, there is no further game progress to unlock. You can only continue growing control and life essence.