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