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