"speak words" was a little short when looking first example symbols . S = pyramid thing, A = L shape thing. There was gabs missing. I am not sure that was intentional or if 2 letter = one symbol. The second puzzle game me a shield and the info said "??re" (I think). The only other writing on the wall had 2 new simple I never say before and never used the shield.
Maybe it a bug, I am will try the game out again. I just found myself walking in circle look for other clues.