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