This is great, good fun!
The fact that you are a mouse threatening people with a gun for money is funny as hell when I finally figured out how it worked.
The graphics are alright, i guess, but they get the job done. So Good!
The time stop is well used in this game, and I think you could make an awesome strategy game with this mechanic! Some FPS with this as a strategic element would be cool!
All in all, good game, i had a laugh :D