Ok so I need help getting the Professor Portal achievement.
This requires you have completed co-op and then complete a calibration level with somebody who hasn't played co-op before.

So if you haven't played co-op will you please help me get it im sooooo close to 1000gamerscore.

And if you have played co-op but aren't very far then you can delete your save and I will still get the achievement.

In return I can help you several co-op achievements which I already know how to unlock.


Thanks for looking, if your willing to help please add the gamertag : "Times Square"
or post your gamertag on this thread thanks!!!