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