Most Fire Emblem games are pretty hard. This one is just an asshole. Weapon durability is a thing, as (almost) always, but the only real way to maintain your army is to capture enemies and take their weapons, which is significantly harder than just killing them. The game throws reinforcements at you in massive quantities in order to whittle away at your durability. The bosses are built like brick shithouses, your lord character is trash, enemy crits are more of an issue than ever, recruiting one unit in particular is a living nightmare, and the way the game uses enemy staff users feels like you must have died in your sleep last night because you are clearly now in hell. The story won't give the player much motivation to overcome the gauntlet either, since this game is just a side-story that takes place halfway through Genealogy of the Holy War and has relatively low stakes.

For the fanatics who want that sadistic gameplay crunch and care for nothing else, this'll do just fine. For the rest of us? Not so appealing.