Battle mode: [Submitted by:SNailB8ter]
Successfully complete the game on any difficulty setting with any ranking. Then, battle mode will automatically be saved to the memory card and selectable at the main menu.

First person view option in battle mode: [Submitted by:SNailB8ter]
Successfully complete the game on the easy or normal difficulty settings with any ranking to enable an option to play battle mode in first person view.

Play as Steve Burnside in battle mode: [Submitted by:SNailB8ter]
Get the Gold Lugers from the basement office in Disc 2. The correct combination is red, green, blue, and brown. You can also unlock Steve Burnside by performing well with the original Chris in battle mode.

Play as Albert Wesker in battle mode: [Submitted by:SNailB8ter]
Perform well with Chris in battle mode.

Play as alternate Claire in battle mode: [Submitted by:SNailB8ter]
Perform well with the original Claire in battle mode.