Rock Band 2

If there ever was a mislabeled achievement name, this is it. All of the "impossible" challenges are insanely easy to complete. This is due to the simple fact that you can play these challenges on whatever difficulty you would like. The "Band" challenge is especially mislabeled because you can play it alone if you so wish. To do this, you'll have to sing and play another instrument.

To access the Impossible Band Challenge you must play through all of the subsequent band challenges in the challenge mode. These are accessed from the same menu that Band World Tour can be accessed. When you beat a band challenge, the next one will appear in the next challenge tier. If you know someone who has this challenge unlocked already, simply play the impossible challenge online with them. You do not need to play all of the challenges, just the impossible one to get the achievement.

This achievement is so easy because you can play on whatever difficulty you want. Set your instrument on choice and vocals to easy and roll out. You should have no problem passing the songs, but sometimes it takes a little practice to sing and play at the same time. The best way to do this is with a headset plugged into the controller. Unless you have a mic stand, this is by far the easiest way to do both at the same time. Remember that you don't have to worry about rhythm sections while you play. They do not effect the band's health meter. Like everything else in Rock Band, practice makes perfect.

Cheers!

If you know anyone who has already unlocked the final challenge, join them. Playing just the last one unlocks it, so you don't need to actually play through them all from start to finish.