Yeah, I actually do download all my games to the hard drive, but still I'd think leaving it on for 9-12 hours might do damage to more then just the electricity bill.
As for DLC2, I actually did know about that one trick... I just didn't feel it helped since the main problem is being limited to 1 hour turns (house rules here), and the time aspect is the bigger problem, rather than the difficulty/setbacks problems.
I believe the DLC4 one is the MINAC Farming overnight one, but not so sure about DLC2.
I much prefer farming Dividing Faults, since it yields a fairly decent amount of collectibles, but still measly when you consider how many I kill. I just don't want to leave the 360 on overnight for achievements when it could overheat, or even if it didn't, up goes the electricity bill. X_X
I do the same thing with my games, but I really don't have that many games that I like that I play for achievements. I believe the only game I 1000/1000'd is Borderlands with no DLCs. Collection achievements for DLC4 are stupidly time-consuming, the armory glitched for me on my first run so no completionist achievement, and I'm sure you know why I don't have DLC2 achievements finished.
Hey, whats up. Just wondering, have you already bought Fallout New Vegas? If you have, what do you think about it? I want to know before buying it in case it sucks (tho i dont think so) please respond if you can.