Here is the full list of all 15 illumine achievements.
Share your time
Reach enlightenment
Light at the end of the tunnel
Appease them
Follow the light
Pay attention to everyone
Help those in trouble, whoever they are
Help those in trouble
Find the reason for their aggressiveness
Take care of your surroundings
See things from a different point of view
Get an R to kill an A
Communicate with others
Get two As to fight each other
Collect your first book