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