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