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