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