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