Start the game with the c&c funpark or c&c95 funpark command line. Choose single player mode and win the Elemental Imperative mission. All units and structures for the team you are playing will be unlocked throughout a level. This allows you use Commandos, Chem Warriors, SSMs and Chinooks.
Hidden missions
Start the game with the c&c funpark or c&c95 funpark command line. Then, select the NOD missions to find five hidden missions involving dinosaurs.
Protect units
If you want to protect a certain units (for example, an ore truck) select a vehicle then hold [Ctrl] + [Alt] then click on the unit you wish to protect. It will follow it around for protection.