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