Bonus missions
Accumulate all the brown bonus books in a mission to finish the photograph at the end and access a bonus mission. Note: The "Saving Private Smith" mission does not have a bonus mission.

Hints & Tips

Easier kills
Always attempt a stealthy approach rather then using guns. If you are using the Green Beret, you can sneak up on the enemy and cut him. Remember to grab his items. This will not alert other soldiers unless the "sound bubble" appears, which is really rare. A good tip for handling many soldiers with only a gun is to use the guard vision. Guard vision will place your shooting range in front of you. If an enemy soldier goes into this vision range, the enemy will be killed as fast as he can be. This is a useful method and it does not not matter how skilled you are at shooting in the game. The CPU will always be better.

Use this trick when you have the diver on a mission with an enemy that you get behind to throw the knife at. The game's line of sight feature works like this: When you lay in the light area you will not be seen, but if you stand up a blue sight will appear which means your enemy does not know who you are. The longer you stand up, the more suspicious he will become. However, if you lay down in the darker area the same thing will occur. Use the diver then take out his knife. Next, go up to the enemy then lay down in the darker area and crawl towards him. The blue sight will appear, but do not worry as he will not see you for awhile. Once you are in range, throw the knife. If done properly, you will kill him while still being safe.

Stealth
Make sure your always aware of your enemies vision range. Do not assume that they cannot see you. There is a good chance that the soldier will move around and will see you. Use the "Eye" tool and place it on an enemy soldier to show his vision range. Remember, if your commando is standing up and is in the "light" area of the vision range, he will be seen but it will take five to ten seconds for your enemy to react. In this time, go into crawl mode. If you are in crawl mode, and are in the "light" area of the soldier's vision range, you will not be visible. However, if you are not using the spy and are wearing an enemy uniform, you will not be seen even when you are standing. However, the darker area of the vision range is the hot zone. You will be seen, and the enemy will react automatically no matter what, except if you are using the spy.