How bad is it? It's the worst "Predator" rip-off and I've seen dozens (maybe hundreds).
Should you see it? No.
Produced by Roger Corman and directed by Fred Olen Ray, I knew this would be god-awful tripe, but it has Roddy McDowall and Stella Stevens in the cast, so I gave it a watch. Three high school football players and two cheerleaders, plus their assistant principal (Stevens) seek refuge after a bus breakdown, only to be taken in by a blind man who turns out to be an alien hunter (MacDowall), who unleashes a robot to collect their heads, while they are stuck inside a forcefield and have to improvise weapons. That sounds better than it is. It's padded heavily and it drags.