Description: This Achievement will be obtained naturally by progressing through the main story, completing missions and killing enemies. However, if you are not level 20 by the time you have completed the story, you will gain a boost to level 20 by completing a mission in the Travellers Hub (Unlocked after the story). To do that, you'll need to speak to Hawthorne and then speak to Ikora, Zavala and Cayde.