It starts out silly and implausible, with two-dimensional characters in unexplained, hard-to-believe situations, spouting trite, cliché-ridden dialogue, and then rapidly descends into a free-wheeling, plotless, characterless mess. This may seem an exaggeration, but it is not. The creators seem to think that to see gore on the screen is all the public wants by way of entertainment, and the screenplay (it seems almost absurd to dignify the writing n this film with the name) veers all over the place, regardless of sense, characterisation or narrative, just to provide instances of blood-spattered violence. The last twenty minutes or so are cringe-makingly bad, enough to make you feel embarrassed for everyone involved.
