League of Legends Challenges: A Flawed Achievement System

Review of League of Legends Challenges and its interface as an achievement system in this game design blog post.

Experience (Legends of Runeterra), League of Legends Wiki

Starfield Achievement list: 50 challenges to complete - Dexerto

Some Highlights within the upcoming Challenges! : r/leagueoflegends

Epic Games Store adds new achievements system next week

Zelos is like a cross-game battle pass, rewarding you for completing challenges in games you already play

The hardest Challenges to complete in League - Dot Esports

League of Legends Challenges: A Flawed Achievement System

Problems with challenges : r/leagueoflegends

Inariel Legend: Dragon Hunt

All League of Legends Veterancy challenges and how to complete them

Challenge- Artifact 4.7