How can I farm for resources?

The various resource maps need to be unlocked by progressing through the story and leveling up your Commandant level. Once unlocked, you can keep clearing these resource maps to obtain the necessary materials. Each resource mission also has several maps.

Additional maps can be unlocked as you progress through the story. These newer/higher-level maps will award you with better quality resources. If you're not going to be able to unlock these new resource maps soon, don't worry! The resources you can get from the default maps should help you build your team and empower your characters as you tackle more missions.