This game is an infinite loop of turn-based battles. You are the wizard, while your enemy is the witch. ATK means attack, and decides how much HP the enemy loses. HP means health points, and it's how much you, or your enemy, can be hit before dying. HIT means hit rate, and decides how often you will hit your enemy, and vice versa. DEF is your defense, and the enemy's attack minus your defense is the damage you take. (And vice versa) Obviously, you won't be healed if your defense is higher than your enemy's attack, but you won't take any damage. Click on a stat in the stats screen to upgrade it. (+1 for ATK, +1 for DEF, +2.5 for HP, and +5 for HIT) You can't upgrade your HIT past 100. The game will only end once the enemy defeats you, or you get trapped in a stalemate.
NOTE: DO NOT SPAM THE STAT BUTTONS Battle music: downloads.khinsider.com/game-soundtracks/album/fire-emblem-7-rekka-no-ken-gamerip