Will Just Cause 2 have cheats for ps3 and multiplayer?

i was playing the demo of this game on my ps3 and i just love sand-box games like Mercenaries 1 %26amp; 2 and i was wondering if they are coming out with cheats or DLC for this game and is this game going to have multiplayer and also if you didnt pre-order the game can u still get the gun and monster truck.|||There aren't any cheats for the game as of yet. The game has no multi player, it is single player only. There will be DLC coming for the game soon. I'm not sure if you can still get the gun and monster truck, I checked the game stop site and it said you'd receive these items if you reserved the game, I guess you could contact them to find out.