Here is the full list of all 73 Ryse: Son of Rome achievements. It takes around 40-50 hours to unlock all of the achievements on Windows.
Achieve Rank 200 In Multiplayer.
Collect All The Chronicles.
Equip Your First Tier 6 Item In Multiplayer.
Fight On Each Multiplayer Arena Environment.
Achieve Rank 150 In Multiplayer.
Equip Your First Tier 5 Item In Multiplayer.
Perform 1000 Executions In Multiplayer.
Achieve Rank 100 In Multiplayer.
Equip Your First Tier 2 Item In Multiplayer.
Complete 20 Multiplayer Campaigns.
Equip Your First Rare Item In Multiplayer.
Complete The Game On Centurion Difficulty.
Survive For 7 Minutes In Firestorm (Survival Mode).
Survive For 7 Minutes In Dockyard (Survival Mode).
Complete The Game On Soldier Difficulty.
Complete The Son Of Rome On Legendary Difficulty.
Complete Edge Of The World Legendary Any Difficulty.
Complete The Wrath of Nemesis On Legendary Difficulty.
Complete Pax Romanum On Legendary Difficulty.
Survive For 7 Minutes In Courtyard (Survival Mode).
Unlock The First Reward Of The Gods.
Complete Beacon.
Use An Execution To Set Fire To An Enemy.
Defeat 25 Enemies In A Row Without Sustaining Damage.
Complete False Gods.
Complete Barbarous.
Revive Another Player 3 Times.
Perform 30 Environmental Executions On Island.
Play A Round Of Survival On Island.
Perform 50 Double Executions In Any Game Mode.
Unlock All The Rewards Of The Gods.
Perform 30 Environmental Executions In Forbidden Forest.
Collect All The Scrolls.
Collect All The Vistas.
Complete Invictus.
Complete The King On Legendary Difficulty.
Complete Trial By Fire On Legendary Difficulty.
Get In Combat With All Executions And Upgrades Purchased.
Kill An Enemy By Perfectly Deflecting An Arrow.
Complete A Comic Book By Collecting 6 Chronicles In A Level.
Complete S.P.Q.R. On Legendary Difficulty.
Complete The Beginning On Legendary Difficulty.
Replay Any Single Player Level.
Play A Round Of Survival Mode.
Defeat 100 Enemies In Multiplayer.
Complete Your First Multiplayer Campaign.
Perform A Co-op Execution.
Use A Trap To Kill An Enemy.
Complete The Son Of Rome On Any Difficulty.
Complete The Game on Any Difficulty.
Defeat Boudica.
Complete The Wrath Of Nemesis On Any Difficulty.
Defeat Commodus.
Become The Righteous Hand Of Vengeance.
Complete Pax Romanum On Any Difficulty.
Find Out What Really Happened To Your Parents.
Complete Edge Of The World On Any Difficulty.
Defeat Glott.
Complete The King On Any Difficulty.
Meet Boudica.
Collect One Chronicle.
Collect Your First Vista.
Complete Trial By Fire On Any Difficulty.
Perform 100 Executions In Any Game Mode.
Complete S.P.Q.R. On Any Difficulty.
Defeat 10 Enemies In A Row Without Sustaining Any Damage.
Collect One Scroll.
Find Your Mother And Sister.
Complete The Beginning On Any Difficulty.
Purchase And Use An Upgrade In Combat.
Meet Nero.
Perform Your First Environmental Execution.
Perform Your First Combat Execution.