Try to make your way to them while circling around the boss. If you’re low on BFG ammo, there are two pickups that spawn in the arena to grab. For the first third or so of the fight, just try to keep the pillars that pop up between yourself and the boss, strafing back and forth to attack from behind them. Spider Mastermind can be tough, especially after it’s been softened up a little bit. Let’s get going on the Spider Mastermind! (Hint: Use the BFG. They’re not easy, so here’s a quick guide with our tried and true methods for defeating them without much trouble. With the new DOOM comes some new (or returning) bosses to take down.