The basic premise of the game is decent, just wish there was a bit more of it. You can soft lock yourself inside the small room if you shoot your gun multiple times, but it fixes itself after 3-5 seconds or so of not being able to move or even look around.
As for replayability, there is a tiny bit to see if you can get a better score... but once you get all of the little pills (items) than its pretty much over since there is no timer that I could see.