To activate GI John Doe mode, when hosting a game press start. Then,while holding L2 press L3(2x), X, R3(2x), O, L3(2x), square, R3(2x),triangle. This will make the Rainbow's bullets turn neon blue and theTerrorist's bullets turn neon red.
To unlock the SPAS 12, Deagle or MG36 in Single-player and Co-op Story mode, play a mission in multiplayer co-op mode and kill a terrorist armed with one of them and pick it up. Complete the mission with the guns to unlock themat the Equipment menu.
Beforemaking Jung hack the computer, send your team to the far side of theroom near the fenced area. When the enemies pour in after you tell Jungto hack it, your team will take most of them out. Be careful withMichael when he gets left behind, there are enemies waiting on thestairs above.
Observe: Locate nearby enemies by taking cover, or by using your snake cam to peek under doors.
Plan: Use the Tactical Map to help you identify all entry points. Use the snake cam to prioritize targets for your team to neutralize first.
Assault: Order your team in. You can more efficiently assault a room by entering simultaneously through an alternate point of entry.
Frag & Clear
Order your team to throw a high-explosive fragmentation grenade when dealing with tight groups of enemies. The flying shrapnel produced by this grenade is usually enough to neutralize enemies within a large area. After it explodes, your team will move in to eliminate any surviving terrorists.
Breach & Clear
Use a Breaching Charge when dealing with terrorists standing close to a door. It will stun everyone inside the room so you and your team can safely clear the room.
Flash & Clear:
The Flashbang Grenade produces a blinding flash and a defeaning blast. It temporarily confuses and disorients potential threats, making this a non-lethal tool that's especially effective for hostage scenarios.
A Smoke Grenade can cover your movement when Terrorists have you pinned down. Use your Thermal Vision to see the enemies' heat signature through the smoke and neutralize them.
InFremont Street, look for a bottle of Axe cologne sitting on a ledge.Shoot the bottle to make the neon roof of the Fremont Street Experiencedisplay an animation of a girl in a bikini with some Axe items.