Eragon

Unlock Dragon Rider Clash mini-game:
While playin the dragon flight missions fly through at least 30 rings
to play the Dragon Rider Clash mini-game.

Unlock Mind Touch mini-game:
After Eragon speak with Saphira drawing symbols on the touch screen
to unlock the Mind Touch mini-game.

How to beat Durza:
Use the stylus to move around when you are fired upon, when you
fight against Durza for the second time. If Durza is in front of you,
continously press L or R. He cannot shoot back while taking damamge.

Click the up arrow with X. You will move out of the way faster.
This also works with down, right, or left.