Extra Modes: 
The regular game is excellent, but the built-in VR Training mode is a definate must.

At first there is only one choice, Practice. Finish all 10 stages, then you gain Time Attack, where the difficulty is heightened a
little, but shouldn't be a problem besides the time limit.

Complete these 10 and you gain Gun Shooting mode, in which the difficulty is at max, and you HAVE to kill ALL the guards to
progress within the time limit. You are given a Socom regular gun with supressor silencer and 5 bullets per guard. If you run out
of bullets, youll have to choke your way outnot recommended.

If you can finish the 10 stages, one last stage can be chosen, Survival Mission, where you rush through all 10 stages one after
another, in under 7 minutes. You start with 30 bullets and dead guards drop bullets. Good luck, if you can complete this, you
are a true Metal Gear Solid Master. 

See "Ghosts" 
First, you need to obtain the camera either by [A] Finishing the game with the ending where Meryl dies and starting that newly
created save file with the camera automatically in your inventory or ...

[B] Getting at least as far as defeating Liquid Snake in the hind helicopter sequence, then going to the room located in Base 1,
floor B-2 with a Level 7 cardkey where there are two autoguns you will have to use C4 explosives to the wall below and to the
right of the bottom entrance to the room where you fight Revolver Ocelot -- in one of the two rooms here, the camera is
located in the top one. BTW if you run into a jammed door that you should be able to, try using a C4 explosive on it and trying
to it then.

In either case, here is how you see "Ghosts". Make sure you have at least 2 blocks free on a memory card to save at least one
picture Take pictures of different things and you may find a "Ghost" image of different programmers, artists, etc. superimposed
on your new snapshot Ive found two by taking pictures of the ravens on the last major elevator and one by snapping a shot of
the dead guy in the prison cell. 

Tuxedo Snake 
Beat the game twice. When you restart Snake will be wearing a tuxedo.