Press [Insert] [Insert] Delete] [Insert] [Delete] [Insert] [Delete] to unlock the "Cheat" option at the pause menu. Then, enter one of the following codes at the "Cheat" menu to activate the corresponding cheat function.
While playing the game, press Esc to bring up the pause screen, then press INSERT INSERT DELETE INSERT DELETE in quick succession.Then a new option called cheat console will appear on the pause screen. Select that option and type the following :