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