So I downloaded Hexic 2 today. I liked Hexic HD and so did my girlfriend so if figured we could both pay this with battle mode. I have most of the achievements in both now. However in Hexic 2 it is a lot harder to get a black pearl, and the computer is amazing at battle mode on expert. So I will probably be forever stuck with 2 remaining achievements in each of the Hexic's.
If anyone has any good arcade game suggestions let me know.