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