On the screen, it seems to be like a walking corpse itself: jerking around malevolently, with putrefying limbs, a fixed, grisly smile on its face and absolutely no spontaneity.

Williams and Piscopo seem to be on autopilot when delivering their lines, not relating to one another, not picking up each other`s timing.

[A] sci-fi, low-tech comedy horror show.

...succeeds solely as a showcase for some admittedly jaw-dropping special effects.