During the battle, some zombies will enter the area. The most amount of damage you will cause upon Nemesis is when it climbs to the top of the clock tower like King Kong. After he gives you the tank's passcode, get your weapon out right away and shoot the red part of the tank to electrocute Nemesis. In the original RE3, the parasites inside Nemesis's body grew large and broke through its skin as a result of Nemesis's jacket breaking through its long battle with Jill, which created Nemesis's second form. If you don't do anything about them, you won't be able to focus on Nemesis, or the zombies could surprise you with an attack while you are trying to fight, So wait until Nemesis is running around the tanks and mow them down with your shotgun. We could not find the message board you were looking for. Or, if you see it going in a circle on the building, shoot a mine thrower on the building near where it will move or hit it with a grenade launcher to do some easy damage. Maybe that's too cliche hahaha.