The Lost On Mars Add-on for Far Cry 5 has 7 achievements.
Perform 10 takedowns on Arachnids using the Power Glove.
Buy 12 weapons.
Collect all of Larry's notes (Host Only).
Complete the game (Host Only).
Hit 10 Arachnids with Crabmones.
Kill all the Queens (Host Only).
Reboot the Terminal on top of the Control Center Antenna.