To find your skills menu, click on ESC on your keyboard. This is going to be the players menu. Find the skills box and click on that. This will bring up your skills and towards the bottom, it will list how many skill points you have to use.
Highlight the skill you want to upgrade. (If you click too many times, another box will appear to change the rotation. -Just close out of it and make sure the skill you want is still highlighted)
Hold down the SPACE button on your keyboard.
Another window will appear and you will have to hold down the SPACE button again.
4. Not only do you need to upgrade your skills but you will also need to upgrade your blessings as well.
5. You can find your blessings in the same area as your skills. Just highlight and repeat as you did with your skills.
If you see a tunnel being built (See picture) – To remove it, go to the foundation menu at the bottom and click the icon “Remove Tunnel.” Each removal will cost you $20 to remove. Very easy and effective to keep those little bastards in their cells!