Fighting Fantasy - Vault of the Vampire, chest riddle

 

Idea for dnd riddle. From Spellsinger’s yt https://www.youtube.com/watch?v=tsXCFx-7FWM&t=837s

The text

Gfgfho sid bqnnvq pe Thffgqjde

Sid dgbho lbhm ng sid wzmhbmu nod

Ugsdf gvmeqfc bme ejeux tdqzszud mhojt

Ng ejmfru zslptsdr dqbeu

I thought bqnnvq might be armor, but then it was so misspelled as armmur I figured not, then I quit trying after the first line and a glance at the rest (figured some 2 letter words were “of” and some three letter words were “and” or something… shoulda tried harder).  Well turns out it sure was armor… spelled “armmur”. I mean “armour”, since it’s the British way of spelling. They got me. Looked it up, found answer on blog below. There are some actual misspellings (how many? Just the first word maybe… great, since we start at the start) in there to throw u off though. 

Here’s the answer https://berolisden.blogspot.com/2011/11/vault-of-vampire.html

 123: You remember that Lothar referred to the Count saying "Forward and back" and laughing. You translate the code on the chest by advancing every other letter one place in the alphabet, and regressing the remaining letters one place. 

Herein the armour of Siegfried

the chain mail of the valiant one

three hundred and fifty separate links

of finest armourers craft

I started to translate based on https://berolisden.blogspot.com/2011/11/vault-of-vampire.html

Hehin the amour of