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