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