4 0 0*Minor spoilers follow:In chapter 6, you will climb a radio tower. Once at the top, you have to turn the power on by going out on the balcony. The fuse box is right by the door you come out of, but if you walk around to the back there is a box on the wall with a flare gun in it. DO NOT give the flare gun to Emily. Either don't pick it up or give it to Mike. None of the other choices made in chapter 6 will affect the trophy.In chapter 7, you gain control of Emily again, but this does not have any effect on the trophy.In chapter 8, Emily will be chased out of the mine and as long as you stay alive, you will escape with only a bite. When Emily gets back to the house, there wil be several long cutscenes and then Mike will be presented with the chance to shoot Emily. Choose to shoot her and you will receive the trophy. Alternatively, if you chose not to shoot Emily, you would receive the "Let Em in" trophy. She must be bit to get either option.If, by chance, you did have Emily pick up the flare gun and you did not have her immediately shoot it off, you can still get the trophy, but you have to be more calculated. While carrying the flare gun, if you make it through the chase scene in chapter 8 without a hitch she will use the gun on the attacker and not get bit. But, if while being chased you fail a few QTE's she will not shoot the flare gun and you will get bit.In chapter 8, just before you get to the elevator, you come to a fork in the road. If you choose the right branch it will slow you up just a little bit before you get on the elevator. After you get off the elevator, fail at least 1-2 QTEs. It doesn't matter if you choose to stay on the conveyor belt or not. If you see her pull out the flare gun and you have to target your attacker, dashboard quit, close the game and go try again.