Achievements

Inside the Home tab, Achievements lets you view your progress as you play the game. Each achievement has 5 tiers represented by stars, and you are rewarded with Gems for reaching each tier. This is the only way to get Gems for free besides daily login rewards and from friends joining the game. Each tier gives the following rewards:

Since there are a total of 17 separate sets of achievements, you can gain a total of 6,545 Gems from completing them. Here is a list of achievements and the milestones needed to reach each tier: * Magic damage upgrades do not count towards the upgrade count achievement.