Happy-Go-Lucky is a simple but time-consuming achievement that requires you to break 3,000 breakable jars in Gunfire Reborn. It is not hard to do, but it may take several hours or days depending on how often you play and how much you explore. You should be breaking jars normally as they can drop copper, weapon ammunition, secondary skill restocks, and rarely buns. The best way to get this achievement is to explore the maps as much as possible and break any jars as you see them.