Achievements
Achievements are task you can complete in RuneSaga which give rewards with increasing value based on how difficult the achievement is to complete, the rewards include things such as Skilling Outfits, Crystal keys, Donator Scrolls, Experience Lamps, and Skilling supplies. Achievements are divided into 4 difficulties: Easy, Medium, Hard, and Elite.
The Achievements can be found by going to the Character Summary tab to the left of your Inventory, then clicking on Achievements.
Completing all Achievements is a requirement to unlock the Completionist cape.
Easy
Medium
Hard