The Breachlords are five endgame bosses, located inside the five types of Breaches. Each Breachlord can be battled its own domain, a map area only accessible by activating the corresponding Breachstone in the map device. Breachlords have exclusive item drops and are the only way to obtain Splinters. While inside the Breachlord's domain, the player must fight their way to the Breachlord while a timer counts down, killing enemies increases the amount of time on the timer. If the timer reaches zero, the stage ends and the player will be unable to encounter the Breachlord.
The five Breachlords are: