Here is the full list of all 50 ELEX achievements. It takes around 80-100 hours to unlock all of the achievements on Windows.
Cold value has reached 90
Served the Hybrid.
Fed Mana to the Hybrid.
Completed ELEX.
Sided against the Hybrid.
Collected 20 pictures.
Killed 1000 monsters.
Picked 100 locks.
Modified weapons 20 times
Fallen to death 20 times.
50 successful pickpockets
Completed - Showdown with Kallax.
Completed - Old Obligations.
Started a relationship.
Completed - Zardom's Battle Plan.
Learned all Cleric skills.
Joined the Clerics.
Learned all Berserker skills.
Joined the Berserkers.
Learned all Outlaw skills.
Joined the Outlaws.
Learned all dexterity skills.
Learned all character skills.
Learned all survival skills.
Learned all fighting skills.
Found Calaan
Cracked 50 safes
Played 80 hours of Elex.
Earned 100,000 Elex shards.
Completed - The Claws.
Sealed the fate of Abessa City.
Killed 300 monsters.
Killed 20 Albs.
Completed - Origin The Power of the Center.
Reached level 20.
Killed 20 bandits.
Cold is 10 or lower.
Completed - Decaying Powers.
Killed 50 people
Completed - Chaos of Emotions.E86
Completed 300 missions.
5 companions
Completed - Tramp Confederacy.
Earned 10,000 Elex shards.
Teleported 20 times
Completed - Stolen Equipment.
Earned 1000 Elex shards.
Killed 20 monsters.
Completed - Survival
First jet pack flight