You can get 1- achievement points for successfully bluffing two Wild Draw Four cards in one 
game, but this is very difficult to get, because most players know when you are bluffing and 
the CPU can see your cards. To get around this, get three friends together and play a four 
player game on Xbox Live. Agree beforehand not to call each other's bluffs, and continue 
playing until all four of you have the achievements. Do not end the match or you will have 
to start all over.