The plot was basically 100% unoriginal. Post apocalyptic world, men turned to zombieesque creatures by strange virus. Strange virus created by mankind in a act of self destruction. Gah!
The only plot development that was truely good was the scene where the creatures trap him his own trick, but better.
As for the defence of his house, cmon even I could have done better. He has about 20 UV lights around his house right? But the creatures just smash them. WHY doesn't he have UV lights in his house? If I had 20 high powered UV lights like that, I'd set them all up in the largest room of the house, in a corner, prepare a barricade, and sit with my arsenal. These creatures burn in UV light, I'd like to any of them get close.
It also seems a little stupid how if these creatures are intelligent enough to set up that trap, why are they too thick to use guns? After all, they've seen him do it?