Shooting mini-game:
In the level where the boss is playing an old phonograph, find the three hidden 
watermelons. They are found in the following locations: just before going down to 
the wall of adobe buildings on the left; hidden in a deep gully; and on top of the 
mountains. Shoot all three of them to play a shooting gallery mini-game. 

Hidden runestone:
Start the level where you have to go to the log mill to kill the "Twins". Enter one of 
the rooms in the three gin distilleries at the start of the level that has a "table" 
constructed from a wood plank laying across barrels. Use dynamite to blows up 
one of the walls in that room to find a hidden area. Inside is a glowing purple 
Runestone.

Cheat mode:
Press [Esc] during game play to display the pause menu. Then, press ~ to display 
the console command prompt, which will be a bright line with an input prompt 
below the menu. Enter one of the following codes to activate the corresponding 
cheat function for the current level. Note: You will not be able to see what you are 
typing. Also, you must re-enter the cheats for each level as they get reset.

Effect - Code 
God mode - god 
All weapons - allweapons  
Maximum ammunition - allammo  
All weapons and ammunition - loaded  
Flight mode - fly 
Disable flight and no clipping - walk  
No clipping - ghost 
Stay underwater without damage - amphibious  
Teleport to area currently looked at - teleport  
Scale player size - changesize (number)  
Restore default player size - changesize *  
Set player speed - setspeed (number)  
Set maximum jump height - setjumpz <number>  
Set gravity - setgravity (number)  
Set slow motion factor - slomo n  
Set camera to behind view - viewself  
Camera and pawn not rotated together when "True" - freecamera (true or false)  
Toggle invisibility - invisible (true or false)  
Possess a pawn of indicated class - avatar (class name)  
Summon requested class - summon (class name)  
Kill all pawns andenemies - killpawns