NOVICE SYNTHESIST
*** Spoiler - click to reveal ***After the L.A. Noire style murder investigation in Luxerion is finished and the gates open back up, you have until midnight (0:00 on the clock) before the next main quest begins.
Open your Luxerion map with X (default controls) and find Old Town. Head there and you will find the Sorcery Shop. Speak to the shopkeep and a tutorial will begin where they show you how to combine two level one lightening abilities into an enhanced version. By doing this, you automatically unlock the achievement!