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