An achievement is basically a type of mini-quest where you get a large XP reward for completing a task. These XP rewards can range from 2,000 XP up to 10,000 XP depending on how difficult the task is.

For new players, completing some of the easier achievements is one of the quickest and easiest ways to level up and thus earn valuable upgrade points for skills.

You can view your current achievement progress in-game by selecting the "Achievements" option in your profile menu.

For explanatory details and tips on an achievement, go to that achievement's specific page.

As of March 2016, there are 54 possible achievements.

Mining achievements

Exploration achievements

Building Achievements

Dungeon Achievements

Social Achievements

Combat Achievements

Task Achievements

Hell Biome Achievements

Brain Biome Achievements

All Achievements Listed Alphabetically

All Master Achievements