On the first level (the island) when you get the hostages in the caves, instead of going through the camps and hills, go left out of the bottom of the cave onto the beach, then go along the beach all the way to the extraction zone.
Go to Tactical Exercises #5. It's called 'defend'. Start off at the base and let the commander guy who tells you the mission briefing before every level talk to you. Then start running away from the camp and he will say 'Don't leave the base. That's an order" The farther you run the louder he will get. It's not really a cheat but I thought it was pretty funny. Unlock Voice Chat Online The HOST can enable voice chat by pressing the following on the Press Start Screen R1, R1, L1, L1, R1, L1 Better guns To get better guns while picking the teams when you have a guy highlighted press R1 and keep going over. (different soldiers have different guns). Easy Kill Pick a team and put the other team on "at all costs" and suppress. Now move them WAY ahead of you with quick command. They will take out almost anybody in their way. Kill Bad Guys Easily You get a sniper and take him first to scout the area. If you see anyone send him to Davy Jones Locker. Then take the rest of your team to eliminate any on you missed. Get MP Mission Unlocked Finish the single player campaign
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