About the epilogues (Dragon Age: Origins)

A question for the knowledgeable. How to get these two eilola ?
Even though the Horde of darkspawn scattered after the defeat of the archdemon, the most powerful of them gathered their stray units and began to attack the nearest of the earth and other groups. Some even got to orleya before were defeated (albeit with great difficulty).
Note: This epilogue gives rise to the plot of Dragon Age: origins - Awakening.
and
If the Guardian destroys the Anvil of the void, a group of dwarves will try to restore it. The first Golem that he created, will be quickened by the spirit from the Shadows. He'll go on a rampage, kill many, and soon research will stop. However, interest in opening Caridin is not quenched.
Note: This is the beginning of the story additions Golem Angaraka.