Participate in the elimination of Willow at Willow's LairThis challenge is not very complicated, whether in solo, duo or section, since you do not necessarily need to kill Willow yourself. The simple fact of inflicting damage on him allows the realization of this quest, provided that the NPC ends up, all the same, by being eliminated before you are.
You will therefore have to go at Willow's Lair, which is on the west coast of the island. In particular, we can see a building there, hidden among the trees. You can use our map below to locate more precisely the Willow's Lair.
Once there, all you have to do is inflict damage on Willow. However, be careful of other players, but also of zombies and zombie hens, which follow Willow and will not hesitate to attack you. You can then try to eliminate Willow, or go about your business, hoping someone else will finish the job.
When the challenge is validated, you will unlock 15 XP for your Battle Pass.