you have to be good at the game like me :)
... There insanely easy
Unlock them like you do with every game. If you're new to Xbox 360, achievements are based on special things you have done in the game. See the big green X in the middle of you're controller? Press that, and a menu will come up. Move to the left a few slides and you should see at the top it says "Gamerscore: (some number)" or something. Select that and all of the games you have played will come up. Move to "Left 4 Dead 2" and select it. Another menu will come up featuring all of the achievements you have, and all the ones you have yet to get.
try out Left 4 Dead Left 4 Dead 2 Avatar the last airbender any sport games army of two borderlands resident evil 5 gears of war 2
You don't, all campaigns are playable when you start Left 4 Dead 2.
To receive campaign achievements, you must complete the entire campaign from start to finish on either single player (split screen) or campaign mode.
No, Left 4 Dead 3 is not coming out. There is only Left 4 Dead and Left 4 Dead 2. Both fun games.
You find weapons all over in Left 4 Dead 2, there's no exact location.
No, left 4 dead will only work for left 4 dead mods.
left for dead
They (Valve and Havok) haven't announced a left 4 Dead 4, but they have announced a Left 4 Dead 3 coming out in 2011.
You can't get The Passing on Left 4 Dead 1. It is only a DLC for Left 4 Dead 2.
Not Left 4 Dead 1 or 2, but Valve and Havok announced the Haggard in Left 4 Dead 3.