Here is the full list of all 46 The Lord of the Rings: War in the North achievements worth 1,000 gamerscore.
Defeat Agandaûr without the aid of Beleram.
Defeat Sauron's Lieutenant Agandaûr.
Complete a playthrough on at least Normal difficulty.
Complete 15 quests in a single playthrough.
Help weather the siege of Nordinbad.
Meet a dragon and survive.
Achieve level 20.
Slay Saenathra.
Amass 25,000 coins.
Free the elf from his captors in Mirkwood Marsh.
While in Hero Mode, perform a streak of 50 hits.
Defeat the Sorceror Wulfrun.
Help destroy the citadel within Mount Gundabad.
Kill 150 enemies with war machines in a single playthrough.
Deal 3000 damage with a single ranged strike.
For one character unlock every skill that provides a modification to War Cry, Sanctuary or Evasion.
Locate 5 gilded treasure chests in a single playthrough.
Slay the wild snow trolls.
Slay Bargrisar the stone giant.
Achieve at least 1 rank in a tier 3 skill.
Kill 600 enemies in a single playthrough.
Discover what happened to the missing Rangers.
Defeat the Barrow Wight Lord.
Learn of the Ring of Power and the plan for its destruction.
Summon Beleram 10 times in a single playthrough.
Achieve level 10.
Defeat Agandaûr's lieutenant Tharzog.
Deal 1500 damage in a single melee strike.
Kill 200 enemies in a single playthrough.
Join forces with the sons of Elrond.
Slot an elfstone into an item.
Revive a fallen ally.
Help free the Great Eagle Beleram.
Perform 3 critical hits within 10 seconds.
Slay one enemy together with 2 other players.
Discover 25 secrets in a single playthrough.
Kill 4 enemies simultaneously.
Unlock every active-cast ability in one character’s skill tree.
Absorb 25,000 total damage during the course of 1 level.
Equip a complete magical armor set.
Kill 50 enemies with headshots in a single playthrough.
Create 15 potions in a single playthrough.
Complete a playthrough on Legendary difficulty.
Complete the investigation of the Cult of the Lidless Eye.
Complete a playthrough on Heroic difficulty.
This is a secret achievement. You must unlock this achievement to find out more about it.