The challenge is to beat a campaign level on Legendary difficulty in under 12 minutes not counting Lone Wolf. I was able to do this by getting to one of the last checkpoints before a level ends, then saving and quitiing, and quitting the game. I then started the game again, resumed my saved game, and quickly finished the level and the challenged popped. Using this strategy, it is an extremely easy 10000 credits.
Halo: Reach
Game » consists of 13 releases. Released Sep 14, 2010
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