Sorry Homer, I'll add you to my friends list. We could have done with a extra hand.
I think there's plans for another night if you're still interested
@Sharky I've looked up the puzzle and apparantly the symbols on the floor have a circle around the symbol you need to trigger next. Why didn't we notice that?
Also there are other puzzles which give you access to special weapons, why we didn't see them either is probably down to the relentless zombie/skeleton/mummy dodging