MUL-T: Pest Control

 is a challenge in Risk of Rain 2. It is completed by defeating two without leaving the Teleporter zone as.

Completing the challenge unlocks the in  loadout.

Tips

 * are common bosses for both Stage 1 and Stage 2.
 * Enabling the doubles the amount of bosses and halves their individual health, making them easily manageable even with few items.
 * Shrines of the Mountain also increase the amount of bosses, but may be more difficult.
 * The most detrimental aspect of this challenge is that are large and obstructive, and summon many  that may further obstruct the Teleporter radius, especially when the Teleporter is on uneven ground. Be mindful not to accidentally step outside of the circle.
 * The Beetle Guards' attacks also inflict moderate knockback, so they may hit MUL-T out of the Teleporter radius. Items that combat MUL-T's poor mobility are a great help.
 * Avoid using while attempting this challenge.