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. You will find yourself on some large "steps". 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.

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. 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 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.

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.

Routes and tricks
Maybe this goes under "easter egg" category, but there IS a small secret to this level. If you are on the elevator at just the right height and are blasted by an arch-vile, you can be thrown against the goat's face. There is a incredibly small (and invisible) ledge there. The ledge is positioned at the exact height you need to fire straight into the tunnel and make the kill.

I classify myself as an expert doom player, FWIW. And I have only made it to this ledge 1-2 times in 5+ years of playing. Also, for whatever reason, I am unable to use noclip to replicate it.

It's there. Keep trying.

Records
The Compet-N records for the map are: