The player, for every 100 kills of a given monster on the list, receives task points, which can be exchanged at NPC Changu for premium points.
In addition, some experience points and money.
The rewards are given depending on the difficulty of the monster in question.
In addition, every time after 500 kills I receive a bonus of double the value of the reward.
To check bestiary monster list use command: !bestiary.
On the info channel you will find various information including the status of task points and how many premium points you can exchange them for.