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