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