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