The Los Demonios Add-on for Just Cause 4 has 10 achievements.
Finish Extermination
Liquidate the Infestation at the Lake
Eradicate the Infestation at the Compound
Expel the Infestation at the Farm
Exorcise the Infestation at the Church
Abolish the Infestation on the Mountain
Obliterate the Infestation at the Crash
Purge the Infestation on the Mainland
Finish The Artifact
Create a Cow Demon