I watched this tonight for only the second time. I didn't remember much about it to be honest, other than the camp villain. Rewatching, at first I thought "oh, this is terrible" but admittedly the experience isn't helped by the fact that my copy is dire (from the Diamond Entertainment LvC "Five Films on 2 DVDs" set - "Fully Restored and Enhanced Digital Masters" my ass!! ::). As the film progressed I started to enjoy it more though it still seems a mixed bag - Van Cleef is great as always but the film seemed to lack atmosphere with some of the music sounding like a rip off of OUATITW, seemingly trying unsuccessfully to add a sense of the dramatic to the scenes.
I rather liked Peter O'Brien and had no idea until reading this thread that he is such a mystery man about whom almost nothing is known. I must say in watching the film I too thought Van Cleef was meant to have caught the bullet with his teeth and was thinking, "dear oh dear..."
Maybe when I'm due to watch this again I might do well invest in a better quality copy - though isn't it annoying that the recent UK DVDs of this and Kid Vengeance both have stills of Van Cleef from The Big Gundown on their covers? ???