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