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