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