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