The Compound system allows you to combine two existing items to create a new one. This is a crucial mechanic for obtaining rare items, powerful equipment, and even some unique consumables. You'll gain access to the Compound system relatively early in the game. To use it, simply select 'Compound' from the main menu. You'll then choose two items from your inventory, and if a valid combination exists, the resulting item will be displayed. Experiment with different combinations, as some recipes are not immediately obvious. The Compound system is also essential for upgrading certain weapons and armor, making them more potent than their base versions. Don't neglect this system, as it can provide a significant advantage.
