Save the game at a waypoint just before completing a quest; or use the "Save And Quit" option at the "Start" menu. Reload the saved game file, then complete the quest without saving. Get the quest reward, experience, and gold, then press Start. Select "Options", then make a change to force a save of just your stats and inventory (but not your quest progress). Quit the game without saving (for example, exit the game from the "Home" screen or by tapping the power button), then reload your saved game file. If done correctly, you will resume at your original save location, but with all previously earned items, experience, and gold. Repeat this as many times as desired. This can also be done prior to Boss battles that do not force a save afterwards to farm for rare rewards.
Heroes Of Ruin