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.
Killed 1000 monsters.
Found Calaan
Modified weapons 20 times
50 successful pickpockets
Collected 20 pictures.
Picked 100 locks.
Fallen to death 20 times.
Cracked 50 safes
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.
Learned all dexterity skills.
Learned all fighting skills.
Learned all character skills.
Learned all survival skills.
Learned all Cleric skills.
Joined the Clerics.
Completed - Decaying Powers.
Learned all Outlaw skills.
Joined the Outlaws.
Learned all Berserker skills.
Joined the Berserkers.
Completed - The Claws.
Earned 100,000 Elex shards.
Killed 20 Albs.
Completed - Chaos of Emotions.E86
Cold is 10 or lower.
Killed 300 monsters.
Completed 300 missions.
Completed - Origin The Power of the Center.
Reached level 20.
Killed 20 bandits.
Killed 50 people
Sealed the fate of Abessa City.
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