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