Outside of the fucked-up same-turn reinforcements and the still ugly DS animations, this is a damn good Fire Emblem game. The challenge is there all throughout the game, from the Prologue chapters all the way to the endgame, and they go above and beyond with the additional difficulties between Normal and Lunatic. They actually put in effort to tackle Shadow Dragon's blandness by putting in supports and base convos. And they thankfully provided realistic requirements for gaiden chapters.