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