Explore Your Castle and Cook
Conquest is hard enough with its mobs of tough enemies, but you can make it a little bit easier by simply exploring your castle in between missions. Your characters will be scattered all over the area, and you can talk to those with an exclamation point above their heads to receive items from them. Sometimes they’ll give you random weapons, and other times they’ll give you food.
Now you might be tempted to feed all your food items to Lilith. However, I recommend bringing a few scraps of food to the mess hall. You’ll be able to cook food, consume them, and this will give your army temporary stat boosts that will last until the end of your next battle. If you don’t intend on focusing too much on beefing up your castle for online play, sending your food to the mess hall will be very worth your while.