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