Mission select
Note: This cheat involves editing a game file make a backup copy of the file before going on. Now use a text editor to edit the "shellcfg.h" file in the "dark\shell\" directory. Then change the "#define BTN_MISSION_COEFFICIENT 150" line to "#define BTN_MISSION_COEFFICIENT 157". The new "Cheat" icon in the lower left corner of the screen will allow you to have any mission to be selected on the dial.

Final mission: Easter Egg:
When your in the last mission, there is a monolith in the northwest corner of the map. After destroying every enemy force and accruing a minimum of 100,000 credits, the Easter Egg will be activate when you move any unit close to the monolith.