Just make it a generic AVP comic/video game story with some gung ho colonial marines on some jungle colony where they find a derelict Predator spaceship with eggs on it. They investigate the spaceship, where a a few of them get facehugged, and as the rest of the crew starts scavanging the ship while waiting for it to be towed back to base, the ship is accidentally activated and a distress signal is sent.
The humans deal with the newly found technology and their facehugged compadres, and of course there is an evil W-Y employee there to screw things up. Eventually the Alien infestation starts and shortly after that the Predators arrive to join the fun.
As a "twist" one of the Predators is extra arrogant and full of himself and brings total chaos - the Aliens get the upper hand. In the meantime the skeezy W-Y dude and a bunch of opportunistic marines get the great idea to use the chaos to their advantage to acquire some tasty ET technology and specimens to bring home etc. ...Unfortunately the last surviving Predator get in their way and kills all but the W-Y guy, who believes he is special and tries to communicate and bargain with the Predator (who earlier in the film duels and kills the arrogant douche Predator who screwed things up), all ending in a hilarious scene where the Predator snuffs the bastard right after he thinks ha has outsmarted and made a deal with the Predator. The Predator then heads to the Predator Clan Carrier ship, which uncloaks... All is well for mister sole survivor, but then, all of a sudden, he starts convulsing and a slimy little pred-alien chestburster spurts over the ship's controls. The Predator slumps over the control panels and the ship changes direction and crashes into the planet, killing every remaining human and alien on the battleground below in a gigantic blast. THE END
I know, pretty lame. But hey, it's AVP!
