so theres a secret boss in the burning world and to get to it you need to go to that room with the secret orb and lava but instead you charge the shotgun and shoot the bottom left corner and go inside and once you get to the hallway after the red orb you will see a crack on the wall to the left so you need to shoot the shotgun after you charge it and then go through until you see a green door
If you mean in the cyber grind try pushing the: up up down down right left right left B A those keys will enable cheats and you can open the cheat menu
