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