Essence is the currency of Ninja Gaiden Black, used for purchasing items and upgrading weapons. Always absorb essence after combat, but consider 'saving' large essence drops for a powerful Ultimate Technique. Certain areas, like the Monastery's Great Hall, are excellent for farming essence due to respawning enemies. Replaying early chapters on higher difficulties can also yield significant essence. Prioritize weapon upgrades over consumables early on, as stronger weapons make subsequent encounters easier, thus saving you more health items in the long run. check Muramasa's shop frequently for new stock.
