Adventurers wanted to retrieve some information

Adventurers worked for a vormaxian and a Taurusian that seem to be working together to get some info. They go in disguised as bodies for experiments. They find the shady dealings like hiding an army of amped up undead. They debate forever over the fate of the three scientists. They let two free and kill the other. They drop defenses to get the allied army in to wreck the base. The allied army murders the zombies from the balcony using rocket launchers and a flamethrower.