Yes, I've beaten it.Compared to some other games in the series, this game is almost laughably easy, although still enjoyable. Although a playthrough on any difficulty besides hard is almost pointless (Assuming Arena abuse isn't used.)
By far the Mercenary is my favorite unit, extremely balanced and and accurate weapon, with most mercenaries having good stat growths.Although eliminated in FE9/10 (Even though Ike is practiacally a Mercenary-type lord), I still think Merc's have the advantage.Favorite flying unit would be the Wyvern Knights, I used to be more of a fan of Pegasus Knights, but they are a bit too fragile for my tastes