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