Board Thread:Off-Topic Discussion/@comment-25387561-20140905105256/@comment-9605025-20140906030939

Bchimself28 is mostly correct. The ways to get credits in the game are:


 * 1) the missiles
 * 2) regular mission boss battles
 * 3) * not to be confused with episode boss battles
 * 4) selling cards
 * 5) * weapons and characters
 * 6) episode rewards

Personally, I prefer to use cards exclusively for upgrading.