First person view:

Beat the game under the easy or normal difficulty setting and save the game.

Battle mode:

Beat the game under any difficulty setting and save the game. A battle mode option will be unlocked at the main menu.

Battle mode in First Person View:

Unlock battle mode and collect the sniper rifle that Alfred Ashford drops in disc 2.

Infinite Shotgun Shells:

In the room with the model of the facility and the two paintings of the British captain, go down the ladder then go right back up. When you get back up the ladder, the shotgun shells will be sitting behind the pedestal. Exit the door, and then go right back in the door and down the ladder. Go back up the ladder, and the shotgun shells are there again! Continue doing this until you have as many shells as your little heart desires.

Get the Rocket Launcher:

Beat the main game of Code Veronica with an "S" Ranking to earn the Rocket Launcher. To do this, you must not use First Aid Spray, not save your game or press retry, at the start of the game; you must also give Carlos the Hemostat. You must also quickly save Steve from the Lugar room when he takes the golden guns in disc 1, and finish in under 5 hours. Then, when you begin another game, the Launcher will be available from the first Item Box you run across.

Get Linear Launcher in the Battle Game:

Once you have the two Claires, Steve, Chris and Wesker. You now have a chance to gain the Linear Launcher. All you have to do is get an A ranking with each character in the battle game. After you have done that; the Linear Launcher appears in your characters inventory. Enjoy!

Play as Steve Burnside in Battle Mode:

Grab the gold Lagers from the basement office on Disc 2. The correct combination is red, green, blue, and then brown. Also, if you do well as Chris in Battle Mode you will unlock Steve Burnside.

Play as Albert Wesker in Battle Mode:

Beat the Battle Mode as Chris.

Play as Alternate Chris:

Beat the battle Mode as Albert Wesker.

Play as Hunk in Battle Mode:

Beat the game within 3 hours and 30 minutes or less, earn an "S" ranking, and collect all of the files. The game will confirm this after the rankings.

Bonus Actions:

In the battle game, each character has a bonus action. When you are the second Claire, walk slowly, and she will react to the cold weather, and shake. While playing as Steve, when encountering the pop machine, press X, and he isn't too happy about not having change for a soda. When you are Chris, encounter a mirror, and wait. He will groom himself. When you are Wesker, encounter the body model, and he will take a gander at it. These are just some bonus actions during the battle game.

HINTS:

Zombie Tip:

Equip the combat knife, and when a zombie comes near you, aim for their knees. They will fall down immediately and it saves ammo too.

Tyrant Tip:

As you fight the tyrant in the plane, immediately shoot 30 gunpowder arrows, and press the blue button. He will fly right out the back of the plane without you even having a scratch.

Easier Tyrant Tip:

Simply save the three Bio Organinc Gas Rounds you find in the prison area, and use them in the Cargo Plane. You can fire them all in three seconds, then push the catapult switch, and the Tyrant won’t even get near you.

Wesker Tip:

While you are Wesker in the battle game, here is a tip to avoid zombies. When you are in the room with the stairs, and the zombies are coming up, stand by the top of the stairs and swipe your knife constantly, and the zombies will fly back and it will be easier to get out of the room.