MAP30: Icon of Sin (Doom II)

MAP30: Icon of Sin is the thirtieth and final map of Doom II. It was designed by Sandy Petersen and uses the music track "Opening To Hell".

After completing MAP30, the credits are shown.

Walkthrough
Pick up the weapons and powerups and go through the teleporter (Boss 1). You will find yourself on some large "steps"(Boss 2). Each step acts as an elevator which can be activated by pressing on the Demon face on its side. Get to the top step and press the button. A small platform in the blood pool at the bottom of the steps will rise up (Boss 3).

When the platform has finished raising, press on its side. The platform will lower down to the floor (an elevator). Stand on the platform and select the rocket launcher (Boss 4). Turn to face the large Demon-face wall (which is known as the Icon of Sin and gives the level its name). The platform will raise; slightly before the elevator reaches the top, launch a rocket toward the exposed brain. If timed correctly, the rocket will enter the brain (Boss 5) and an echoing pain sound will be heard. This takes practice to time correctly. Several direct hits are necessary to defeat the Demon. When defeated, the Demon face will explode and the level will exit.

Dodging the horde of monsters spawned by the Icon is a challenge, and often one must lure a group of monsters away from the platform before jumping on it again, or kill them with the BFG. Two radiation suits are located on the mantel below the Icon, which are recommended to prevent the toxic mud down around the platform from harming you beyond what the monsters do. Monster infighting will occur and help to limit how dense the horde becomes.

Secrets
There are no official secrets in this level. Using the idclip cheat code to pass into the Icon of Sin reveals the violently severed head of John Romero, impaled on a spike. This is unreachable by normal means and does not register as a secret, but can be considered an easter egg. Shooting it also ends the level.

Records
The Compet-N records for the map are:

Trivia
This level features John Romero's head on a spike as the hidden Boss brain. When the Icon of Sin wakes up, it plays the message "To win the game you must kill me, John Romero", reversed. This message has now passed into gaming legend. The music to this level is also exactly the same when reversed.