-When fighting Durza the second time, use the stylus to move around when being fired upon. When Durza is in front of you, hold L or R. Durza can't shoot back while getting hit.
-Also, click the up arrow with "X to move out of the way faster. This also works with down, right, or left.
Go to Hadarac Desert after Eragon talks about Brom and you fight off the two enemies. From the starting point by Saphira, run northeast until you come across a big rock. In front of it there'll be an Eragon-sized rock, a small rock, and some grass. Move foward so that Eragon is facing the front side of the rocks, then jump. If done correctly, Eragon will either float in mid-air or just float down slowly. If you double-jump, Eragon might go inside the big rock. Once done, you cannot get back out and must quit the game or turn off the power to exit from it.