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