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