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- All VR missions and characters
Start a new Missions file, then enter UUDDLRLRBA as a name.
- Alternate ending sequence
Successfully complete a Snake Tale to unlock the M9. Begin game play and use M9 to stun the Bosses instead of killing them to view an alternate ending sequence.
- Automatic rations
Equip a ration icon. When your life reaches zero, the ration will automatically restore part of your life so you do not have to.
- Avoiding detection
When a patrolling guard sees you, run into a room where the screen goes black and tells you where you are. The game will not go into alert mode, evasion mode, or caution mode.
If you have an a silenced USP/SOCOM, you can shoot at pipes. They are quite common in the game, and, when hit, shoot out steam. This will paralyze or distract an enemy, depending on their proximity to the pipe. Fire extinguishers have the same effect. With a silenced weapon, you can shoot a wall near a guard to make them turn and look at the wall for a few seconds. If you evade a guard's detection in hanging mode and they walk past, press [Action]. Your character will flip over the railing and knock the guard out with the impact. Alternately, you can fall on a guard from hanging mode. If you are out of ammo, unequip your weapon, run at a guard, and when close, press [Crouch]. Your character will either do a somersault or a cartwheel and the impact will knock the guard out. if all else fails, toss a chaff grenade, run and pop off all the guards before the radios work again.
- Bird droppings
Complete the Tanker chapter with Snake. After that, get to the roof with Raiden. You will see a group of birds. Shoot one with the M9. The rest of the birds will fly around. If you see one go directly above your head, it should send some droppings on you. You have to be in first person view. The bird droppings will also come off the screen when you go back to third person view.
- Bonus items for dog tags
Collect the following percentage of total dog tags per chapter on any difficulty level to unlock the corresponding bonus.
Tanker Chapter
Unlimited ammunition bandanna: 46 dog tags (30%)
Stealth apparatus: 76 dog tags (50%)
Plant Chapter
Unlimited ammunition wig: 73 dog tags (30%)
Stealth apparatus: 121 dog tags (50%)
Orange wig (grip gauge will not diminish): 170 dog tags (70%)
Blue wig (Oxygen gauge will not diminish): 218 dog tags (90%)
- Boss survival mode
Successfully complete Sons Of Liberty under any difficulty setting.
- Bug splatter
In the Shell 2, B1 after retrieving Emma, go to the elevator. Plant a C4 in the middle of the bugs crawling around on the floor. Walk a short distance away and enter first person view. Detonate the C4. If done correctly, bugs should splatter all over Raiden's face.