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