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