Lantern Wisp

There a nine lanterns that can be found on the outside of the Museum Infinitum and The Luminarium buildings. One of these nine lanterns will contain a white wisp that you can collect by aiming down sights on it for a few seconds. Once collected, you need to melee to shoot the wisp into the other eight empty lanterns, each time requiring you to ADS to pull the wisp back out of the lantern.

Once you have put the white wisp into the other eight lanterns, all the lanterns will fill with wisps and the color will change from white to gold, allowing any players to ADS on these golden wisps to have up to five of them orbiting you at a time, which you can shoot at zombies by meleeing to one-shot a small group of zombies at a time.