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