Well, I finally beat Parasite Eve again. For whatever reason, the shotgun is the most powerful weapon in the game. It's the only weapon that hits multiple enemies and it has the most expansion slots for extra buffs, such as acid and elemental bullets.

But the boss fight isn't the most ridiculous part of the game. There's a chase scene at the end. Do not use the phone save point, because it doesn't work. If she uses it, the ultimate being will smack her with a one-hour kill. And then she has to start the final boss fight over. Also, go left at the first and the second forks in the road. There, I just saved people one extra hour of pain and suffering. Lol.