How bad is it? It's a cheap sequel to a cheap knockoff of a cheap trash film.
Should you see it? Yup.
Still another Bert I. Gordon film about giant people (or giant animals), this is a sequel to The Amazing Colossal Man, which was based on Attack of the 50 Ft. Woman. Apparently, the monster didn't die, but he's lost half of his face. He gets caught, put in an airplane hangar and escapes to Mexico where he throws trucks and buses around. His sister makes him feel guilty and he commits suicide by grabbing high-voltage electrical lines. This contains the original color ending to the first film.