WOW, the art style, colour palette, and general theme of the game is just stunning. It's hard to believe you got all this done in one weekend! I think with more work this could become a game that people would buy!
Small feedback on the controls. Up/down and then left/right should switch to left of right. This is the behaviour with left/right and then up/down already so I presume they're just hard coded like that. Also it would be nice if the x in the corner of the phone collection menu closed the screen rather than having to right click.
Overall though congratulations on an amazing submission!
PS: I think I got stuck inside the cashiers! I couldn't escape