Eh,
I'd have to say I'm slightly dissapointed, I'm guessing you're slightly new to flash however so I'll be leniant. The voice-overing was pretty awefull, I almost closed the thing due to irritation with the high pitched voices. It sounded like they were in a hallway too, maybe you should find an alternate way of doing voices. It would have been better if you'd spent more time ironing out details as well, making the motions more fluid and complete. The "randomly pulling out guns and chainsaw" bit made it seem completely unbelievable, and took away from the desired outcome. Put some more time into refining your work, I know you can do better.
Good luck,
Kao-