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