Shlongor

If you knew anything about the Doom books, or logic itself, you'd know that they DO entail the BASIC MYTHOS. Call someone at ID for all I care. You lose your weapons because passing through a gate is supposed to leave you naked. You don't lose your guns at the end because you aren't in hell, just on the receiving end of a gate.

You enter hell without gear because in the original mythos, you can only pass through the GATES (not just teleporting) naked. Read the Doom books. It's all there.