As you play through Sakuna: Of Rice and Ruin, there will be an assorted of upgrades weapons and items that you can build, as long as you manage to gather up enough resources to do so. Before this, you will need to gather up the resources needed to build a small hut that will act as a blacksmith.
The main resources you will need are clay, stone, and wood, and there are different places you can collect them from.
As you explore the levels, you will notice large lumps of glistening rocks in area of the level that are often a bit tricky to reach. If you can get there, you will be able to hit them with your weapons to mine important resources.
Breaking Fangs and Barriers
The levels will also contain things called Fangs, sharp outcroppings or rocks, or barriers made from wood to block your path. Smash an enemy into them and the can break, dropping important resources that you can then pick up.
Treasure chests will be hidden in some levels, so explore them fully. These chests can contain important items or random resources that you will need. You can get a mask that makes finding these hidden chests much easier as you play through the game.
Killing enemies can also drop all manner of resources, from food to iron, wood, and stone. While it can be tempting to try and run past enemies as you do multiple runs of a dungeon, it is a good idea to just clear them all out for any resources that they might drop.