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