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