The Cult of the Holy Detonation Add-on for Wasteland 3 has 12 achievements worth 235 gamerscore.
Shut off the holy detonation
Re-routed power from the Holy Detonation to Colorado Springs
Made 1000 Island Dressing and used it to sabotage the Particle Accelerator
Fed the Night Terror until it fell asleep.
Freed Father Beazor from captivity.
Killed or Mutated Father Beazor.
Created an Uber Clone or the Flesh Prince using Irv’s Cloner.
Consumed every type of irradiated mushroom
Managed to unlock Bezoar's laser wall without being detected.
Solved the K.E.G. puzzle.
A Ranger reached 10 stacks of Holy Radiation.
Re-united the Nucleasts and Primordialists