In fact I don't see them as a threat at all so I don't ever destroy them.
Here are my videos. There's four parts. I beat him without Thermal Goggles or switching controllers. This is done on emulator.
Part 1: http://www.youtube.com/watch?v=W7ncJ48xDK0 Part 2: http://www.youtube.com/watch?v=RJJq3GpOk5Q Part 3: http://www.youtube.com/watch?v=VBYQJWdSiXM Part 4: http://www.youtube.com/watch?v=psgy15_nyis
I realize the framerate is a bit choppy but that's because of the thing I use to record.
My Youtube Channel: http://www.youtube.com/user/Resulli My DeviantArt profile: http://res6.deviantart.com/
Res, I don't understand why you'd fight him the long way. You even lost a ration in the process.
btw, I made a mistake in my previous post. You don't destroy the statues, you destroy the masks that are on the statues. Apparently Mantis' psychic powers will get distracted because he's looking at his own ugly face.