Werid...
Okay, the flash did manage to get a startle moment out of me in the beginning, so it gets some points for that. Other than that one instance the rest wasn't real scary in any sense. Disturbing, but not scary.
But overall I liked this little movie. The monster were all creative, unique, and disgusting, making them all seem unsettling. Some great sounds effects bump up the creepy factor quite a bit, and I didn't quite expect the ending. To cap it all off, the animation was quite good.
I give this a 7 because it really wasn't scary, and the creatures, while sick godless freaks, lost their intial creep factor towards the end. But it does disturbing pretty good, so there's some merit in it.