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