Access Battle Mode:

Complete Resident Evil Code Veronica on any difficulty, and save your game, then you will be able to access Battle Mode from the Title Screen.

Access Albert Wesker:

Complete Battle Mode with Chris Redfield.

Play As Alternate Chris In Battle Mode:

Complete Battle Mode using Wesker.

Access First Person View Option In Battle Mode:

Take Alfred Ashfords sniper rifle when he drops it on Disc 2.

Play As Hunk:

Complete the game on Normal Difficulty in under three and a half hours, and collect all files.

Access Linear Launcher In Battle Mode:

In Battle Mode get an A Ranking with Steve, Chris, Wesker, & Both Claires.

Access Rocket Launcher:

Complete Resident Evil Code Veronica with an A Ranking, and save your game, then start another game, and the Rocket Launcher will be stored in the Item Box.

Getting An A Ranking In The Main Game:

To get a Ranking of A you must complete the folowing objectives during the game:

You must get the Medicine for the Jailer Rodrigo.
You must save Steve from the Luger room quickly.
Do not use a First Aid Spray.
Do not save (other than saving to switch discs).
Dont retry.
And complete the game in under 4 hours and 30 minutes.