General comments:

Depending on which way you came up you'll be going down the other way. Actually that's not true if you went up the right way you can always go back down the same way and use the secret teleporter to take you back to "They May Be Slow..."

If you go down the opposite way you came up you get to see the whole level.

Conversations with the Dead:

If you go down the right way you can talk to anonymous German soldier. This maybe your first time.

Items to find:

Stuff to find depending on which side you're on.

Monsters to kill:

Headless, Zombies and a Phantasm (Banshee)

Decisions to make:

You see a ladder going down. Descending to They May Be Slow....