Labyrinth Sentinel

Labyrinth Sentinel is the world boss that guards the way to The Keeper. Depending on number of players and difficulty settings, it takes from 16 to 24 hits to defeat the Labyrinth Sentinel. Each cube has a bright, white cube set in the center of two or three of its faces (again, depending on player count and difficulty). All you have to do is shoot all of these bright, white targets and you're home free. Easy, right?