The Legend of Zelda: The Wind Waker HD has quite a few changes from the original GameCube release, one of which is Hero mode, which is basically Nintendo's way of saying hard mode.

In Hero mode, enemies do twice the damage, and recovery hearts do not appear in the wild from chopped grass, enemies, or pots. It's pretty straightforward what Hero mode is, but in case you are still confused, Nintendo has created a trailer that offers three different examples of enemies doing twice the damage, and the lack of recovery hearts. Nintendo does love to over-explain. On the plus-side, we get to see some new Wind Waker HD footage.

The Legend of Zelda: The Wind Waker HD is coming to Wii U on October 4. Nintendo is offering a special Wii U Wind Waker bundle on that date as well.