At the July 1998 screen (after you've chosen a character),press
the L and R triggers on the player 2 controller...Jill
dresses up to show off her abs of steel! Oh yeah, and it works for Chris too.
You must have a saved game. On controller 2, hold x,y,z and Start at the title
screen. You'll hear "Resident Evil."
Then hit start on controller 1. There should be an option for Battle mode.
It gives you all the weapons, plus first aid bottles, and you have to
kill a ton of enemies.