Mercenary: Demon of the Skies

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

Tips

 * Jumping from a high enough point and using Whirlwind, Blinding Assault and Eviscerate 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.