This is a pretty simple achievement that can be obtained fairly early on in the game. In order to unlock, you need to have all five power bonuses active at the same time. To get the bonus, you must travel to a place of power and draw from it, each place of power gives a bonus to a specific sign.
There are six of these places in the first main area of the game, White Orchard, covering all five signs with two places of power for the Quen Sign. If you want to find where each place of power is, it is outlined in this video. Hope this helps!