You should have reached the area with three portals at the northern end of the Heresiarch's Seminary. If you look at the south wall, you'll see nine dark panels. Just as in Shadow Wood, each of these panels corresponds to one of the nine puzzles you must solve in the chapels. Each of the three portals lead to a different chapel. The portal with the symbol of a wolf leads to the Wolf Chapel; the portal with the dragon head symbol leads to the Dragon Chapel, and the portal with the griffin leads to the Griffin Chapel. Note that each chapel has three portals, each leading to the other two chapels and the Seminary. As you guessed, those portals also have the corresponding symbols on them to indicate where they go to. The portal leading to the Seminary has no symbol on it.
花了点时间，把所有版本的doom1第一章Knee-Deep in the Dead通了一遍
总结出doom主要分为主机版和PC版（这个好像是废讲的），具体体现在一些怪物种类、物品、机关和建筑的差异上
PC、PC98，jaguar，sfc版面是PC版，很奇怪吧，sfc是主机上最忠于原著的版本，90%和pc版完全一样，为什么差10%呢，因为缩水掉一个关卡-_-b
gba、md32X、3do、ps（应该也包括ss）算是主机板，gba版按说应该和sfc接近才对，结果却和冤家对头的md32x一个鼻孔出气，关卡均无缩水，3do班有个秘籍可以放大画面，但我没用出来
idtech4版非常吃机器，激战的时候会跌到35fps，i7+5850-_-b
好想看 
谁能帮我