Instructions
Insert the "Halo: Reach" game disc into your Xbox 360.
Press "Start" on the game controller when in the "Halo: Reach" main menu.
Navigate to the "Challenges" menu using the left joystick on the game controller and then press "A."
Note the different challenge requirements for the day because you can complete many challenges at the same time. Highlight the challenge you want to complete first and press "A" on the game controller. This will take you to a game lobby appropriate for the challenge you have chosen.
Select "Start Campaign" or "Start Matchmaking" and press "A" on your game controller.
Focus on the gameplay elements required to complete the challenge when playing. Repeat play until you complete the challenge and then repeat this process until you complete all available challenges.
Complete the challenges each day to quickly level-up.