Here is the full list of all 45 Re-Legion achievements.
Complete Mission 2
Kill 250 Enemies
Convert 100 Civilians
Complete Mission 1
Hack First building
Reach population limit
Convert one Civilian
Complete Mission 3
Complete Mission 4
Complete Mission 5
Complete Mission 6
Complete Mission 7
Complete Mission 8
Complete Mission 9
10,000,000 Faith Gathered
10,000,000 Crypto Gathered
666,000 Faith Spent
666,000 Crypto Spent
Destroy Enemy Sanctuary
Hack Enemy building
Unlock complete Cyberocultism dogma system
Unlock complete Neuromisticism dogma system
Unlock complete Cryptocommandments dogma system
Making a choice resulting in receiving a forbidden dogma
Annoint 1000 Fanatics
Annoint 500 Purifiers
Annoint 500 Preachers
Annoint 500 Worshipers
Annoint 300 Penitents
Annoint 300 Martyrs
Annoint 100 Ascended Ones
Kill 1000 Enemies
Convert 1000 Civilians
Convert 125 Enemies
Decide to protect the Fibonacci Cult
Decide to subdue the Fibonacci Cult
Decide to resurrect in Clones
Decide to resurrect in your Followers
Decide to kill Smoothie and his kind
Decide to show mercy to Smoothie and his kind
Decide to show mercy to the Heretic
Decide to kill the Heretic
Allow Shereen to go
Forbid Shereen from going
Convert 10 pissing Citizens