I liked the game, it reminds me a lot of the time I spent playing Space Cadet Pinball on Windows XP with Medieval Madness. Playing the game in full screen is very satisfying, seeing the richness of detail in the game and the alien walking on the screen is very cool, it's desperate trying to keep hitting him.
I also liked the music, I think it illustrates the game well, but I think the voice acting could be improved, changing the current voice to one with an alien, monster or technological theme.
It's a very fun game, congratulations!