Radio Frequencies

140.01 - Salty Catfish / 66 Boys
140.52 - Rock Me Baby / 66 Boys
141.24 - Sea Breeze / Sergei Mantis
142.94 - Pillow Talk / Starry.K
144.06 - Jumpin' Johnny / Chunk Raspberry
147.08 - Surfing Guitar / 66 Boys
147.59 - Sailor / Starry.K
149.53 - Don't Be Afraid / Rika Muranaka

Get out of Groznyj Grad prison cell quick

If you talk to Sigint enough time while your in prison, he tells you that the cell door is unlocked by a certain frequency. If you "knew" the frequency you could unlock it with your radio. That frequency is 144.75

Monkey Mask

Get the five best times in Snake Vs. Ape to unlock the monkey mask.

Unlock Banana Camo

Get the high score on each stage of the Snake Vs Ape mini game
 
Hint: Snake Pukes

Spin snake in circles in the cure menu to make Snake throw up.
 
Hint: Title Screen Fun 

On the title screen the L3 button changes the pattern in the background. R1 speeds up action and R2 slows it down. L1 switches the black silhouette from the foreground to the background and L2 changes the color of the silhouette. L3 changes the color of the pattern in the background. 

Unlock Camera, Extreme Difficulty, Patriot & Single Action Army

Finish the game one time

Fire Support

At any time during game play, on the second part, Snake Eater, go to your codec menu and tune to station 140.73, and call it. This will call in fire support but you will not be allowed to do this more than once. Because the station will not be used again. Believe me, I saved my game, then used it just to play around and then shut it off. Then I went to use it again later and it wouldn't work. So, do not use this unless in dire need.

More Stuff Before You Start Your Mission

After Snake goes back to the jungle the second time, Major Zero will tell you to head North. Well, instead of heading North, go South. There are NO enemy soldiers on the way back, just a few snakes and crocks! But anyway, go all the way back to where you started the first time to find some good items, and a certain flower that can come in handy. You will need to cut it from the ground to obtain it. This is no cheat, it was just my luck of going the wrong way, and I was able to find more things. You can easily find your way back to where you need to be. Just follow the path North again. Easy stuff.

Raiden Mask

At the start when you choose new game a question comes up. If you choose "I like MGS2!" then when you start you will see Raiden but its really snake who takes off the mask and when you start playing go into camo and put on the mask.

Unlock Special "Frog" Camo

Shoot each frog in each area to unlock a secret camo

Non Lethal Camo

Beat all the bosses without using lethal force to earn a special camo

Surviving "The Sorrow"

When the game over Screen comes on use the REVIVAL PILL... If you've died at least 3 times in this part, Call anyone on your Codec and they will tell you this.

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