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