i dont know if the trainer is failing at keeping you alive in this mission but i spent a couple days and alot of time and reversing to improve the option. you should be impervious to almost anything with the new trainer when it gets posted. i stood in front of WWII .50 cal weapon fire, grenades, exploding vehicles, tommy guns, and rapid fire SHOTGUN blasts (with rapid fire option ON) by multiple cops surrounding me with no deaths. i couldn't find anything that could kill me any longer. pwizard will post it shortly. you might have to watch the main thread to see when it is posted.
best,
Cal
Cal I did not use the trainer since this is my first playthrough, sorry I forgot to mention.
Though I did try it once for money, and I was able to activate the trainer, but as soon as I pressed the option key, the game closed.
PS: I have gotten through it.