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