Complete a snake tale once and this unlocks the M9.Use the M9 to STUN bosses rather than killing them.This gains you an alternate ending.
On the title screen, press White and you should hear a gunshot and see a flash. Use the Right Analog stick to change the background color.
her codec frequency is 141.52 which is the same frequency as Nastasha Romanenko from Metal Gear solid 1...
1.) Call Emma a few times...
2.) Call Rose to save your game and after you save she will get all huffy about you being with another woman.
When inputting your name into a node or into the VR training menu, enter HIDEO KOJIMA. His personal information will automatically be inserted.
When talking in the codec screen, press the Left or Right Triggers to hear Snake's or Raiden's thoughts on other characters in the game.