Get infected with an alien parasite and talk to SunnyThis challenge happens in two stages, which can make it quite difficult. The first is to make you infect with an alien parasite so that it comes to be grafted on your head. We find these alien parasites wherever the animals can be, so on the whole map or almost. However, you are more likely to find an infected animal near the purple area.
Once this is done, you will have to talk to Sunny, character of this seventh season. This one is quite simply at Believer Beach, in the northern part, to the right of the pontoon, on the beach. All you have to do is talk to him to validate the challenge and thus unlock the XP for your Battle Pass, this challenge offers you 30.
Note, however, that to make you infect with an alien parasite you need to kill the carrier animal, but don't deal too much damage to the alien parasite to keep it alive and clinging to you. You may kill it, in which case you will have to look for another one.