On Earth~ Do patrols on earth go to the divide and use ether seeds kill all and have fun~ On The Moon~ Go to the Dark Beyond Mission on the moon, go to the end when your ghost says "we've awoken the hive" then put on the black idol wax and kill all but the knight. Let him kill u then rinse and repeat. If you decide to stop farming and want to leave return to orbit, and when you want to come back to farm again you'll start back at the same point and wont have to redo the story up to there again.