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