Instructions
Open your Default input file located in your ̶0;Borderlands̶1; directory with Notepad.
Scroll down until you see the ̶0;ConsoleKey=None̶1; command.
Change the command to ̶0;ConsoleKey=tilde̶1; then click ̶0;File̶1; then ̶0;Save.̶1; Close Notepad.
Open ̶0;Borderlands,̶1; then load a single-player game.
Press ̶0;~̶1; to open the developer̵7;s console.
Type ̶0;dbm_toggleghost̶1; then press ̶0;Enter.̶1; This will enable wall clipping and allow you to fly through walls and discover the secrets in any level.