Become evil guildmaster of buccaneers, destroy all good in the world, leave and join enforcers, become good guildmaster of enforcers, leave and conqueror all cities. That was a productive year
if missions drain so much and you only get 10 war bonds at begin you should add like storage packs and you can sell two 100 packs for like 1 or 2 war bonds and lower the max energy required to be like 10 or at most 15