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