Kin

Kin is an artifact that can be found in the Dried Lake Area on the right-most cliff face. The area is accessible by running through a tunnel hidden in the cliff face. The entrance looks like a chunk of more crumbly wall, and must first be shot open (requires quite a bit of damage to break it) before the puzzle may be attempted. It can be acquired by any mobile character (or character with enough speed and jump pickups) jumping to the entrance and solving a simple puzzle involving shooting three buttons within a time limit. The Kin artifact forces an area to spawn only one type of enemy.

The spawn rate is not increased for monsters that have a naturally lower spawn, such as the Jellyfish.

Tips
In Boar Beach, this artifact works with Toxic Beast or Scavenger. Only one of them will spawn with this artifact.
 * The Kin artifact can be used to easily farm off weaker monsters if they spawn, such as the Lemurian.
 * Activating the teleporter while using the Kin artifact will cause a large amount of the chosen monster to spawn, with most of them being elite monsters.
 * In long games bosses might be chosen to spawn, so be careful when looping.