Have you ever wanted to try breaking games? Nooo, I'm not just talking about bugs. I'm talking about intentionally changing the game as you wish. I suggest you try it...

Code Management:

Up for the character - W
Down for the character - S
Camera up - Shift + W
Camera Down - Shift + S
Change the code - R
Upload the code  - Enter

Game management:

Move - Left mouse button
Shoot - E
More information - T