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