This is a simple, yet interesting puzzle game with good level design, that is good enough to make you think, and the concept of removing words to change the alien's order is innovative.
I will admit, it took me time to figure out that I needed to do it in time, which isn't really explained the best. Also, the alien can detect you from behind you're miles away, which does get a bit annoying if you think you can sneak behind him. Maybe if you had more time you could've added an area of detection to the alien based on distance.
Other than that, good job!