Infusion

Infusion is a returning item in Risk of Rain 2.

Trivia

 * You can have any number of infusions. The limit is only capped by the game's memory.
 * Having multiple infusions that aren't capped out yet still only increases your health by 1 per kill.
 * Due to the engineer's turrets being separate instances, and thus having their own infusions, kills the engineer's turrets make don't increase the engineer's health; rather, they increase the respective turret's health.