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