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