Blastin' And Relaxin' (2000 cR)- Kill 180 enemies in any game mode of Reach.
Gunslinger (1000 cR)- Kill 100 enemies in multiplayer Matchmaking.
Points, Points (2500 cR)- Score 20,000 points in a Firefight Matchmaking.
Got A Triple Double (500 cR)- Earn 3 Double Kills in the same match in multiplayer Matchmaking.
Total: 6000 Credits
Well, here we are. These are fairly straightforward challenges, guys. All I can really say is just play. There's no great way to get Double Kills, although R E D x A C 3 would say SWAT. Hmmmmm. I don't have anything to say, honestly. This is an easy day if you have the time.