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