Double click the flag if the boss dies. (Note: Custom weapons can only shoot bullets right now) Welcome to the third instalment of Erol's Terraria Boss Battle Creator! Improved, with brand-new content. The controls are the same as Terraria: A and D to move Space to jump Click to shoot when the tutorial is over H to heal You can make battles with this, too. Just listen to Example Boss and he will teach you the ropes and set up your game.