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