Here is the full list of all 49 Hades achievements. It takes around 80-100 hours to unlock all of the achievements on Windows.
Fulfill the 'End to Torment' Prophecy
Earn all Chthonic Companions
Unlock all Weapon Aspects
Reach the epilogue of the story
Fulfill the 'Divided by Death' Prophecy
Max-rank each standard Keepsake
Fulfill the 'Night and Darkness' Prophecy
Fully Unlock the Olympians' Codex entries
Fulfill the 'Musician and Muse' Prophecy
Earn a Loyalty Card
Earn the second of Skelly's prizes
Earn the first of Skelly's prizes
Equip a Chthonic Companion
Fulfill the 'Dark Reflections' Prophecy
Unlock each standard Keepsake
Fulfill the 'Harsh Conditions' Prophecy
Fulfill the 'War-God's Bloodlust' Prophecy
Fulfill the 'Master of Arms' Prophecy
Fulfill the 'Slashed Benefits' Prophecy
Fulfill any 15 Prophecies
Complete the main quest in the story
Choose 50 different Daedalus Hammer enchantments
Get 30% bonus damage with the Pierced Butterfly
Forge a bond with any character
Clear an escape attempt with a hidden Weapon Aspect
Clear an Infernal Gate without taking damage
Max any Weapon Aspect
Pay for 50 jobs from the House Contractor
Have at least one rank in each Mirror of Night Talent
Trade 20 times with the Wretched Broker
Compel Orpheus to sing again
Get 20% dodge chance with the Lambent Plume
Catch a fish from each region
Use an Olympian's Greater Call against them in a Trial
Earn access to and enter the Administrative Chamber
Choose 100 different Olympian Boon effects
Clear Elysium with the 'Extreme Measures' Condition
Use Greater Call to invoke an Olympian's aid
Beat Thanatos by 15 kills or more
Clear an escape attempt
Purge a Legendary Boon
Buy 9 'Well of Charon' items in one escape attempt
Slay Skelly 15 times
Pet Cerberus 10 times
Clear Tartarus
Clear Elysium
Fulfill the 'Chthonic Colleagues' Prophecy
Clear Asphodel
Unlock each of the Infernal Arms