The Guns, Love, and Tentacles Add-on for Borderlands 3 has 8 achievements worth 250 gamerscore.
Achievements they've won
Achievements they've not won
Find the party.
Marry your friends.
Kill the Wendigo.
Watch Deathtrap kill 50 enemies.
Complete all Crew Challenges and Side Missions on Xylourgos.
Collect all ECHO logs on Xylourgos.
Find and kill all 4 rare spawns.
Listen to 25 fish jokes.