Invisible Cyberdemon (Last Man Standing)

The Invisible Cyberdemon is a Boss located in Sigma Quadrant. This Cyberdemon is special, because he creates an invisibility force field that makes him invisible and invulnerable. It has the same rocket launcher as the Doom 3 Cyberdemon. It appears that this enemy has appeared only one time. Its the strongest boss of the LMS. However, theres no cutscene when it dies. When hes killed he will fall and disintigrate like the other demons.

Combat analisys
It fires 3 rockets like the other cyberdemons. This time he will use his invisibility and attack the player. The key to kill it is to activate the four Laser systems that will disrupt his invisibility force field. However, after a while he will regain it. During this time, the player should use his most powerful weapons against it. Use of Plasma Gun, Chain Gun , Shotgun and Rocket Launcher is higly recommended. When he recovers his invisibility, he is only seen by its mouth flame.

Final Storyline
The Marine gets to the exit of Sgma quadrant when its blockaded by a type of hell flood. Then a cyberdemon appears. The Marine activates four Laser Systems and deactivates its force field. He does it continously until he kills it. When he exits the Quadrant, in a text its displayed that he hears GunFighting , possibly by the earth fleet. But the marine must find a way to thwart the invasion and destroy the demons.