Germany =conquer Russia, while holding to all original territories in europe including norway/finland
Italy = Control x amount of territories in africa and x amount of african neutrals
Japan = Control orange territories plus China, India, Australia, and New Zealand ( add Hawaii, specific islands in pacific)
USSR = Control ( i think they need to control germany, and all german occupied territory in former eastern europe, plus manchuria)
UK/US = Together control: Western Europe, Southern Europe, Japan, africa, all japanese islands in pacific.
This is in addition to controlling your capital.
++++ some problems: Mancuria was occupied by the Soviet Union in the closing days of ww2, also Japan was never occupied ( of course its under the western allied players influence for Victory conditions… work needs to be done)