[spoiler]I promised Chrom that I wouldn't do it, but I sacrificed myself. Thought it was what a real hero would do. Not sure how the game ends if you don't, but if you do, Chrom mentions how Naga said that you might still be alive, so he says he won't stop until he finds you. All your companions say something, mostly agreeing or honoring your sacrifice. After the epilogue credits, a cutscene almost identical one of the first cutscenes (one where Lissa and Chrom find you) plays, except for one minor change. [url]http://www.youtube.com/watch?v=FJk39gRt9Nk[/url]. I actually thought the game restart or something (like some games do after you beat them), but to hear Chrom say those final words... it was a perfect ending, imo.[/spoiler]

Holy -blam!- dude there's a spoiler tag