Icon of Sin
Intro None
Type Giant,Teleporting citadel boss
Signs of nearing Screaming
Origin DOOM II
Map(s) Citadel
Theme song Final boss music
Partners DOOM Monsters
Stunnable? Killable

The Icon of Sin is the final Citadel boss in Slender Fortress.

Description Edit

In Slender Fortress Edit

The Icon of Sin is the Last boss encountered by picking up the last soul key. It spawns a potentially endless series of monsters of demonic ilk (minus cyberdemons, spiderdemons, and zombies), all of which count towards the player's end-of-level kill percentage; as a consequence of this, the player can finish the level with a greater than 100% kill percentage.