I don't think there are any. Hacks are cool, but they sometimes ruin the fun.
Yes, there are.
No, Radiant Dawn is only for the Wii.
You can't. There are no cheats in Fire Emblem Radiant Dawn.
Four.
Part 4, Chapter 3, Distortions. Baselard is at 12E and 10N.
in a store...
she's looking for Zihark, because Brom told her that he was going to be her husband.
Oliver
I think not.
Start part 3.
About 20
As of now, you cannot.