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