Move the robot around the vault area and block enemies from reaching the core. Attack automatically when visible—no shooting button required. Toggle transparency to avoid damage or reposition safely. Watch your energy bar—staying invisible too long will drain it completely. Use bamboo obstacles as cover and path-control tools. Defeat all enemies in a wave to advance to the next, harder round. Controls Desktop Move: W / A / S / D Toggle Transparency: Spacebar Attack: Auto-fire when visible Mobile Move: Virtual Joystick Toggle Transparency: On-screen Button Attack: Auto-fire when visible Key Features Stealth-switch mechanic: visible = attack, invisible = untargetable Energy-draining invisibility adds timing + resource management Vault “loading phase” forces defensive priority moments Bamboo cover system blocks bullets, vision, and enemy pathing Progressive wave difficulty with scaling enemy types and speed Fully optimized for both keyboard + mouse and mobile touch controls