Here is the full list of all 74 Middle-earth: Shadow of Mordor - there are Game of the Year Edition achievements worth 1,680 gamerscore.
The One Ring has returned to it's Maker.
Kill a Graug by dispatching your Ghûls on him.
Maximize the power of the Ring by completing all of the One Ring missions.
Build all the Forge Towers in Udun.
Stealth Brand a Captain.
Brand 20 Uruks in 60 seconds.
Wraith Flash Dominate 50 Uruks.
Challenge the Dark Lord in Mordor.
Shadow Brand 20 Uruks.
Help a Captain survive a Recruitment Power Struggle, and then kill him and all his new recruits.
Capitalize on a Warchief's Fear.
Issue a Death Threat, and then successfully kill the target.
Activate the Blazing Steed.
Defeat all the Beastmaster Warchiefs.
Have a dominated Caragath, Wretched Graug and Spitter Ghûl simultaneously.
Have 20 Branded Ghûls at one time.
Bait 10 Ghûl mounds.
Catch a Ghûl Matron on fire during the Lord of the Hunt campaign.
Eat a captain with a Wretched Graug.
Use a Wretched Graug's Projectile Vomit on an Uruk Captain or Warchief.
Kill a Caragath with an Execution.
Perform an Execution on a flaming Berserker.
Liberate 30 slaves in 180 seconds while riding a caragor.
Complete all Hunting Challenges.
Poison a Captain at his own Feast.
Complete all Survivalist Challenges.
Use Strike From Above while at least 60 feet above your target.
Complete 25 Caragath Stealth Kills.
Begin a new hunt with Torvin.
Complete all Urfael Legend Missions.
Complete all Outcast Rescue Missions.
Complete all Acharn Legend Missions.
Complete all Azkâr Legend Missions.
Collect 100% of the Artifacts and listen to their memories.
Collect 100% of the Ithildin.
Kill The Black Hand.
Kill The Tower.
Brand all 5 Warchiefs.
Brand a Captain while in combat.
Activate all Forge Towers.
Start a Riot by commanding a Warchief to attack another Warchief.
Save Lithariel's life.
Kill the Great White Graug.
Lift Lady Marwen's curse.
Use the Detonate ability to burn 50 uruks.
Kill all 5 Warchiefs before any uruk take their place.
Kill The Hammer.
Collect 50% of the Ithildin.
Destroy the Monument Gate and topple the statue of Sauron.
Eliminate the bodyguards of two Warchiefs, then draw them out and kill them.
Make 20 uruks flee by dropping Morgai Fly nests.
Unlock 4 Dagger Rune slots.
Successfully complete 4 Hunting Challenges.
Complete a Vendetta Mission.
Witness the creation of The Rings of Power.
Attract caragors with bait 5 times.
Collect 25% of the Artifacts.
Free 5 caragors from cages.
Complete a Sword Mission and begin growing the legend of Urfael.
Complete a Bow Mission and begin growing the legend of Azkâr.
Unlock 3 Sword Rune slots.
Unlock 2 Bow Rune slots.
Get Ratbag promoted to Warchief.
Complete an Outcast Rescue Mission.
Successfully complete a Survivalist Challenge.
Discover some of the Wraith's past.
Complete a Dagger Mission and begin growing the legend of Acharn.
Make an uruk yours.
Acquire a level 25 Rune.
Get a Level 30 Rune in Test of the Ring.
Complete all objectives in the Test of The Ring.
After an uruk kills you to become a Captain, help him become a Warchief, then kill him.
Brand 5 Bodyguards of a Warchief, turning them against him in combat.
Complete all objectives in the Test of the Wild.