OK - easy level afterall - when you have someone walking you throug it step-by-step. I never would have considered spoiler:climbing the tree - not only was there no hint about it, it didn't really even stand out from the rest of the environment.
I don't know how long it would have taken me to think of spoiler:putting the thieves in the basement.
And, had I not already read about spoiler:giving the map to the wife,
I would never have thought of that either since spoiler:she isn't frobbable.
The level certainly looked cool, though. And I've always liked the idea of spoiler:finding a whole secret world underneath your house that was always there but you didn't know it. The whole "wife/zombie" thing was a little silly, though.
Personally, out of the three Glyph contest entrants, I'd have voted for Winter's Holiday.