I believe there is 3 but I'm not 100%
Each Call of Duty 4 rar password is different. The password comes with your game and can only be used once.
i think u have to get gold on each mission
Wow that answer was quite vauge. There's Three Act's each with five to six missions.
You have to complete every Special Ops mission in the time limit or on Vetran to obtain the 3 gold stars for each mission.
At certain points in each mission, it will say checkpoint reached. So you don't really get checkpoints, you earn them.
you get access to the Mw2 museum. three rooms with characters and weapons from each mission.
Infinity ward haven't released this info yetEDIT: 23 missions each mission has 3 levels of difficulty
Purple: Reduced strength- 60 to 79 percent fit for duty; the vehicle and crew are mission capable.
it was a church
No, there is no deadline. Each mission can be done at the TIP member's convenience. The start date is always recorded to be able to track the number of contributions for each specific mission.
no you can do each mission at any time (if you've unlocked that mission)
Each mission is different. You could try to find a walk through for each mission.