Tips for beating Yugi's expert challenge: 1. sneak monsters and destroy monster power ups are going to be of use. 2. when facing his second "boss" deck, he always uses raigeki in the top left slot, or atleast in all of my fights against it (destroy this spell to make your life easier in this fight). well that's all I've got for now, got to wait for energy to refill before taking on the second half.
these scientists get scared too easily, all I did was lock them in a room full of neurotoxin, then tell them that everyone is getting a raise. They al just started running around scared for some reason... is a raise really that strange for them? great game