Yeah seems like a nice game for only two people working on it.
A problem I'm having though is with the cash register as well.
It "locked up" on me and when I interacted with it again it brought up the code screen and now I'm stuck on it. I pressed all the numbers and nothing happens, and then I tried moving, pressing E, I, pretty much all the controls and cannot get off the cash register.
I'm a Flash developer as well. I like your game. ;D I got to the point where I had to combine the 3 ciphers to open the door of the church, but I didn't have a piece of paper handy so I stopped. Very cool though! I had one error when I clicked on a cash register button, but I think it's because I have the debug version of Flash Player installed.
My apologies, children, for I am afraid I cannot save you all.
I liked the character design because it looks impersonal and mysterious feeling that adds up to the dark and gloomy atmosphere . But may i suggest that you add some facial feature like for example a grin on the character standing under the tree.
The church is good but other buildings seem out of place to me because they are too tidy and in order and don't look like deserted building. I hope my suggestions are useful