Fire Emblem: Path of Radiance

Beat the game once on any difficulty. Then start a new game. As soon as you start one, you will be able to play Fixed growths mode, so your growths are fixed. That means that your growths will go up by a certain amount, not random like before.

The Ashera staff is a S level staff that heals all HP to all allied units. On the level with the priests, don't kill any and the priest will give you the staff.

Stefan is a secreat swordmaster. You can unlock him on Feral Frontier. To get Stefan you need to move Lethe or Mordacai to a square in the in the top-right corner. Starting from the top-right corner move 2 squares to the left and one down. If you move there Stefan will appear. If you move there with one of your two laguz he will join your party. If you move there with any Beorc than he will appear and give you his S-Level Sword called the Vague Katti. If you recruit him he comes with the sword.

By beating the game, you can get some illustrations

In the final chapter a Bishop has Rex Aura equiped which you cannot obtain in the game, but these 4 steps will help you obtain this item.

1) Silence the Bishop
2) Wound the Bishop, until his HP is at least under half
3) The Bishop should use an Elixir to heal himself (if not, try weakening him further).
4) By now, he should have de-equipped the Rex Aura, so you can steal it with a Thief.