Soul Reaper

Soul Reaper, also known as Boss Slayer, is a daily activity released on 18 August 2014 that involves the player helping Death harvest the souls of various boss monsters, as in Death's words, there is not enough death in the world. Death tasks players with "reaping" various boss monsters in special assignments, which reward Slayer experience and reaper points that can be spent on a number of things, including hydrix gems, a new title, and a set of cosmetic gear.

Getting a task
To start a task, a player must visit Death's office via a portal next to the Draynor Village lodestone, and then speak to Death to obtain a task. Note that a task may be rerolled up to five times per day, but doing so diminishes the point rewards by 25%, excluding the first reroll. Players may only get one task per day normally. As Death is kidnapped by Sliske during the events of Missing, Presumed Death, his clanmate Frank fulfils his role in the activity for him for the duration of the quest.

Assignments
Death may assign the following boss monsters, with numbers depending on the difficulty of the boss. Players can toggle if they want to have group bosses active or disabled, which will change Death's tasks for the player. Death gives you a grim gem, which is used the same way enchanted gems are for regular Slayer.

Unlike normal slayer, players will not receive Slayer experience upon death. After each kill, the player is notified how much they have left for the task. Upon completing the task, the player is awarded with a hefty sum of Slayer experience and some reaper points. Tasks can be re-rolled up to 4 times, decreasing in point pay out each time.

Players may also have a regular slayer task and a reaper task for the same monster. For example, if a player has a Black dragons task and has a reaper Queen Black Dragon task at the same time, upon defeating her players will get normal slayer experience while the kill will count for the reaper task.

Rewards
In addition to slayer experience, you also are rewarded with reaper points, which are used to purchase items and effects. Most of these can also be purchased with slayer reward points. There are also cosmetic rewards that are unlocked by completing certain objectives. Unlocking all permanent rewards is a requirement for the trimmed completionist cape.