I've done HHM, but I thought that was easy compared to LNM.
To all you people who don't like Lyn mode: it's helpful, makes some units more helpful and others actually usable. But I've got to admit it gets boring sometimes.
Energy ring and Angelic robe, I think those are the only stat-boosters.
Do hard mode, you could get an extra promoted unit by doing it (by promoting Kent/Sain with the Knight Crest). XD