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