5,000 gold:
Press L, Y, A, R, B, X, Y, A during game play in Story or Continuous Play mode.

+20 wood, +20 stone, +20 iron:
Press A, B, X, Y, R, X, B, Y, A during game play in Story or Continuous Play mode.

Full map in exploration screen:
Press R, L, B, Y, A, X, L, X during game play in Story or Continuous Play mode.