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