Duke, Gordon, and the space marine would wipe everyone else out easily.   They would then enter into a 4 way deathmatch with master blaster in the thunderdome.  The space marine uses the chainsaw,   gordon uses his rocked launcher with the fancy red dot,  master blaster uses a big axe, and duke has the shrink ray gun as well as a bunch of laser tripmines.  Master Blaster trips on a trip mine, and that kills blaster,   master gets chainsawwed up like crazy, and the space marine takes a rocket to the face.  Then it's just Duke and Gordon left, and duke's all outta gum.  He whips out the holoduke and hides in the hidden chamber.   When he sees Gordon with the RL trying to blast away at holoduke, he shrinks him and stomps on him,  crunch.   Duke wins.  Duke always wins.   That is,  until he faces Chuck Norris.