Demo - How far should I be able to get?

[ChocolatePie]

Hi,

Got to the map and I'm trying to get to either the store room or the office but everytime I creep round the corner, with no light at all, I get attached by a dog. The walkthrough says "go to the storage area" but no clues how to get there and I can't seem to sneak past this dog or defend myself.

Should I be able to get further than this, or is this the end of the demo?