honestly, the most aggravating thing about this game is having to exit out of every upgrade window for each unit, specifically not having the ability to rapidly switch between upgrade windows for all the units. that alone has made me die on many of these levels.
 "GunBall 2: Emperor Revenge"){kind=icon}
 "MARDEK RPG: Chapter 2"){kind=icon}
 "Protector IV"){kind=icon}