the gameplay loop is to use a warrior or mage stone then go into the dungeon and fight the monsters in there until you get to pregnancy level 3 then give birth to increase your stats with the clinic giving the best boosts and then repeat until you are strong enough to win the rank up fight which requires you to be at pregnancy level 3. Take on quests to get more gold and then get info on enemies or buy better gear to make fights easier. However remember that you need 500 gold on top of a few other items to make more stones at the blacksmith.