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