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