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