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