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