Full list of all 52 Ruined King: A League of Legends Story achievements. It takes around 40-50 hours to unlock all of the achievements on Windows.
Complete the story on Story Difficulty
Complete the story on Normal Difficulty
Complete the story on Veteran Difficulty
Acquire all Legendary Weapons
View every character dialogue when at Rest points
Reach Level 30 with any Champion
Unlock an alternate Skin for any Champion
Pass the Test of Nagakaborous
Complete all Baron's Rest Crucible battles
Acquire 1 Legendary Weapon
Acquire 200 Black Marks (cumulative)
Enchant 30 Items
Acquire 100,000 Gold (cumulative)
Complete Windrake Island
Infuse 10 Epic Items
Defeat Possessed Gangplank
Defeat Thresh
Unlock all Champion Ultimate Abilities
Complete 5 Bounty missions
Complete 50% of Baron's Rest Crucible battles
Complete 50% of the Bestiary
Return Maokai to full strength
Reel in a Treasure cache while fishing
Complete a Bounty mission
Eat 15 Meals at Rest Points
Collect 50% of the Lore entries
Unlock a Level 3 Ultimate Ability
Have Ahri join your Party
Meet Maokai
Meet the Rumor Monger
Have Pyke join your Party
Arrive at the Shadow Isles
Complete 25% of the Bestiary
Have Miss Fortune join your Party
Cleanse Grey Harbor from Black Mist
Consume 50 Potions
Enchant your first Item
Have Yasuo join your Party
Consume 10 Potions
Team up with Braum
Experience visions of Ruined King
Complete all Bounty missions
Infuse 10 Rare Items
Infuse 30 Items
Catch 100 Fish
Catch 10 Epic Fish
Catch every type of fish and complete the Fishing Journal
Complete the story on Heroic Difficulty
Unlock all alternate Skins for all Champions
Complete 100% of the Bestiary
Collect 5 treasures from Poro Holes
Collect all unlockable Lore entries