Mercenary: Demon of the Skies

 is a challenge in Risk of Rain 2. It is completed as by not touching the ground for 30 seconds.

Tips

 * Jumping from a high enough point and using, and  as soon as they become available can be enough to complete this challenge.
 * Items like and  can also help you stay in the air longer.
 * You can float in the airvents on Sky Meadow to easily complete the challenge.