Unlock the following characaters by performing the corresponding tasks:
CHARACTER - HOW TO UNLOCK Cobar - Complete the game under the hard difficulty setting. Commando - Complete two player co-op mode. Metrac - Complete the game under the easy, normal, and hard difficulty settings. Specialist - Win 10 games in Ad-Hoc or Infrastructure Multi-player mode. Stratson - Win 100 games in Ad-Hoc or Infrastructure Multi-player mode.