Equip yourself with some gear and start exploring the open map. Take a friend with you if you wish. Encounter randomly generated enemies with randomly generated weapons. The weapons you see on enemies can drop for you to use exactly how you saw them! Weapons you find can be wildly different from each other as they may have multiple special properties which can make them behave quite differently, like throwing a mace instead of swinging it, having multiple copies of the weapon at once, or perhaps it explodes upon hitting an enemy. Each run will be different and challenging. Bosses are never quite the same.