#1: Shootin' And Lootin': Kill 250 enemies in any game mode in Reach (2500 cR)
#2: More Than A Handful: Kill 125 enemies in multiplayer Matchmaking (1250 cR)
#3: Mostly At Night: Complete "Nightfall" on Legendary without dying (1250 cR)
#4: Shut Up!: Customize your Spartan's armor in the Armory (777 cR)
Total: 5777 Points
Ok, so today is a really good day for challenges. First off, just do Shut Up!, which only requires you to change one part of your armor (helmet, shoulder pads, etc.) and you can just change it back. Then, just complete More Than A Handful. That'll get you halfway through Shootin' And Lootin'. Then, do Mostly At Night, using the buddy system of one going ahead and the one trying to get the challenge to stay behind and wait, then switching off.
|Because these guys won't go easy on you|
If you haven't gotten 250 kills by then, just go play some Firefight or Multiplayer.
Good luck and have fun today guys!