Now this is one fucking awful boss fight. So poorly designed. If you're going to have a game where auto aim is on by default, don't design a fucking boss fight where you have to aim your weapon in the direction where the enemy is not. And in a game where adhusting your aim turning is slow as shit. Jesus.
Trying to shoot the switches and all you aim at is the fucking nemesis. Awful. The fight was slightly less awful when I turned off auto aim. The fact is I shouldn't have to change default settings to make something tolerable. How anyone thought that was a good idea is beyond me.
A shame because for the most part RE3 has had the best bosses of the original trilogy for sure.
Game finished though! Frustrstions with auto aim screwing me over near the end there aside, I really enjoyed RE3. Best of the original trilogy in a lot of ways. Worst in others. Man does the game give you waaaaaay too much ammo though. At the end I made a shit load of magnum ammo preparing for a big fight. Had tons of grenade launcher ammo. Shotgun handgun. Never even touched the mine thrower. For the final fights your ammo meant jack shit....
Use the second aim button. It for objects and targets them first.