Simple but fun... As mentioned by a few, some more features in the next version would make it even better... maybe stairs or lifts to go up or down in the building so that levels have more than one floor to them...
I could be wrong but when you put a version number of 1.0 or higher it should be at least a playable game... not knocking you but you have a version 0.01 ALPHA thing here. If it's just for your friends then just send it to them. Cheers
PS. It's still more than I can do :)
Not too bad... but this is a game that NEEDS! a level editor so people can make devious levels and share them as these ones are way too easy and the game is over in a matter of minutes. Top score on the idea... 2/5 on level design...