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