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