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