Inside the abandoned chapel in Brightstone Cove Tseldora, in the middle of the first room is a group of mushrooms. Hidden underneath them is a Pickaxe which can be used as a weapon, though isn't a particularly good weapon given the effort needed to uncover it. To get it, the player must aggro at least one Undead Boar at the Royal Army Campsite and then very carefully lead/push it all the way down to the chapel until it finds the mushrooms and proceeds to them dig up.
It is also possible to get a friendly piglet from the Royal Army Campsite to follow the player, but they only have a 1/1000 chance of spawning.