Spider Mastermind (Doom 2016)

The Spider Mastermind, also referred to by the demons' scriptures as the Aranea Imperatrix and the form of the Dread Widow, is the final boss of Doom (2016).

Genesis
The form of the Spider Mastermind is granted to Olivia Pierce by the demons in exchange for her attempts to rip open a portal to Hell. From the way the "Acarea Imperatrix" is spoken of by the demons in text logs, it's implied Olivia does not have full control over the beast, but this does not limit the newly-formed demon's animosity for the Doom marine in any way.

Tactical Analysis
As the final boss of the game, the Spider Mastermind is suitably dangerous with a wide variety of attacks to keep the player on their toes. For her primary weapon, the Mastermind sports a deadly plasma gun, and will fire off rapid fan-like bursts of shots. Often throughout the fight, the Mastermind will sweep the area with lasers at various altitudes, first counterclockwise, then clockwise. Should the player get to close, she will swipe at them with her enormous clawed legs.

Unwilling to simply sit still and act as target practice, the Mastermind will shunt herself to the side or flip over and walk upside down if she feels the player has too much of a clear shot.

As she takes more damage, the Mastermind will begin new attacks. To further limit the player's maneuverability she can fire clusters of glowing bombs. Occasionally she can channel her enormous brain and electrocute the ground, forcing the player to climb atop the stone pillars to escape massive damage. The player should watch the Mastermind closely once they've climbed to safety, as the Mastermind can follow by grabbing a giant stone block with her telekinesis and send it speeding their way.

Once she's taken critical damage, the Mastermind will stumble. Now unable to stand, the Mastermind will struggle and crawl to line up her laser cannons or pick up more stone blocks, but for the most part the fight will almost certainly end in the player's favor at this point. Once reduced to zero health, the Mastermind will collapse, setting the player up for their final Glory kill of the game.