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