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