For finishing Diaries the players are rewarded with RuneScape gold exclusive sets and products that are only available through those activities. There are currently twelve diaries available for OSRS players. These include Ardougne, Desert, Falador, Fremennik, Kandarian, Karamja, Kourend & Kebos, Lumbridge & Draynor, Morytania, Varrock, Western Provinces, and the Wilderness Diary.
Achievement diaries are split into four categories based upon the level of difficulty: easy, medium, tough, elite. The first categories are typically quite easy and don't usually require much time or effort. They don't require expertise above level 40. Medium tasks are most of the time easy, even though they may require some expertise to reach above level 65. The harder tasks, as the title implies require more effort and require specific skills to be at or near level 75.
The most elite tasks are designed for buy rs 3 gold endgame players as they may require the level 90 of some of the skills. Even though finishing elite tasks typically takes time and might require certain levels in different skills but they also reward players with the highest treasures. After completing each Achievement Diaries, players gain access to Cyan trim for Quest Point Cape and can purchase the exclusive Achievement Diary Cape.