Upgrading your spirits is vital for increasing your combat effectiveness. This requires various materials found throughout Land's End.

- Blight Fragments: The most common upgrade material, dropped by most enemies and found in chests. Used for basic spirit upgrades.
- Stained Blight Fragments: Rarer fragments, often dropped by stronger enemies or found in more challenging areas. Used for higher-tier spirit upgrades.
- Pure Blight Fragments: The rarest and most powerful fragments, typically found after defeating bosses or in very late-game areas. Essential for maxing out spirit levels.
- Fungus: A common material, often found in damp or underground areas. Used for specific spirit upgrades.
- Ancient Flower: A rare flower, found in specific biomes. Used for advanced spirit upgrades.
Farm Blight Fragments regularly, especially if you're struggling with a particular area or boss. Always prioritize upgrading your main spirit and your most frequently used sub-spirits.