Note this trick will make the Ballistaman's bullet converts to totem, which makes
nearby enemies weak while you becomes stronger. Make as many Ballistamen as
needed, then Bless them. Click the Ballistaman, press B, then click on the ground.
After clicking B, press N at least three times. If an enemy approaches your base,
the Ballistaman will shoot it with arrows made of Totem (infinite).