This game blows!!! I ain't even going to bother getting the challenge.
Firstly, this game is excruciatingly slow, and the fact that you have restart the whole building again when you want to retry the last level is really annoying. I almost tore out my ears.
In short, this is just a crummy demo for a poor game, so avoid this!
I love any game where NPCs get randomly generated names. Makes me establish an emotional connection with them, and when they die, I'm like "No! not Victor! he saved so many people!" and stuff like that. its just so awesome, and it draws me in so much.