To activate debug mode, enter the command line/console by pressing the ` key then typing into the textbox: "ip_debug 1". There are many new functions that you can perform after inputing this command. Here are a few:

• K = Free look mode/Static camera mode
  
• J = Jump
  
• Ctrl+F9 = Teleport to crosshair
  
• Ctrl+S = Skip level
  
• T = Wireframe mode
  
• Y = Render full level (WARNING! WILL CAUSE LOW FPS)
  
• F = Teleport to respawn point
  
• 0 = Cycle graphics modes
  
• Shift+F11 = Kill anyone at crosshair
  
• Shift+F12 = Launch anyone at crosshair
  
• O = Toggle overhead mode (WARNING! WILL LIKELY CAUSE LOW FPS)
  
• Tab = Set camera to next Ped
  
• Shift+Tab = Set camera to previous Ped
  
• H = Set camera to Agent 47

These are your basic commands in the console. To enter the console, press the ` key. Here are some commands:

• god 1 = Enable invincibility
  
• god 0 = Disable invincibility
  
• infammo 1 = Enable infinite ammo (you can run out of ammo in your clip still)
  
• infammo 0 = Disable infinite ammo
  
• giveall = Gives 47 all items from the current level
  
• invisible 1 = Enable invisibility (guards will acknowledge that you're there, but they will not fire)
  
• invisible 0 = Disable invisibility
  
• ip_timemultiplier <number> = Sets time scale (if timemultiplier is equal to 0, the game soft locks)