New answers tagged action
It occurs to me that this might be Thunderball, the 4th Eon Productions James Bond movie. A lot of the scenes are set underwater in the sea or in pools. You say the killer is the main character and is wearing a rebreather or scuba gear. James Bond wears scuba gear or his emergency oxygen mouthpiece. James Bond is kind of a paid killer, and kills several ...
It was The Mechanic. Its the very first kill of the movie in the pool where he pulls the target down and makes the kill look like an accident.
Could it be Metallic Attraction: Kungfu Cyborg? It's a Chinese movie from 2009 starring Wu Jing as one of the leads. I was thinking of this because you mentioned martial arts (and androids of course)..
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