Karnak's Temple

Keymode:
--------
Just type it while playing. 

1.In game, enter on "In game options" with key ESC, or whatever
  key that you have defined.
2.Go "Redefine Keys" menu.
3.Assign one of these three combination of keys (don't worry, 
  after putting these keys, the keys go back to the original 
  settings):

Combination 1 : Jonhy is immune! (KNTIMMUNE) 
 Left            = "K" 
 Right           = "N" 
 Up              = "T" 
 Down            = "I" 
 Action          = "M" 
 Run/Walk        = "M" 
 Fire            = "U" 
 Pause           = "N" 
 In Game Options = "E"  

Combination 2 : Go level up! (KNTLEVELP) 
 Left            = "K" 
 Right           = "N" 
 Up              = "T" 
 Down            = "L" 
 Action          = "E" 
 Run/Walk        = "V" 
 Fire            = "E" 
 Pause           = "L" 
 In Game Options = "P" 

Combination 3 : One life plus! (KNTONLIFE) 
 Left            = "K" 
 Right           = "N" 
 Up              = "T" 
 Down            = "O" 
 Action          = "N" 
 Run/Walk        = "L" 
 Fire            = "I" 
 Pause           = "F" 
 In Game Options = "E"