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