Batman Begins - Hard Mode

Level select:
You must have unlocked hard mode first. You have to collect the 16 bat symbols on your second run through the game.

Alternate Costumes:
Successfully complete the game to unlock the Caped Crusader, Dark Knight, and World's Greatest Detective costumes.

Batmobile Missions:
Successfully complete the Batmobile level to unlock the time attack and extra missions under the bonus option.

Movies:
After completing certain levels, movies become unlocked. This includes movie footage and interviews.