Huntress: One Shot, One Kill

 is a challenge in Risk of Rain 2. It is completed as Huntress by holding 12 at once.

Tips

 * An easy way to complete this challenge is just to find a 3D printer that prints Crowbars and use it until you have 12 of them.
 * This can also be achieved by using a Shrine of Order, while holding a Crowbar. If you have luck this can turn all your white items into Crowbars.
 * This challenge is completely trivialized by the Artifact of Command.