If i could give you a code i would but there is just none to be had- as i said before, there are virtually no codes for this game. Your friend is mistaken, by the way. The weaponry is gained from weapon pods, not the gene Blender. You can buy Upgrades from the Pox Mart at the saucer.
That particular mission is tricky. Concentrate on taking out the agents along her path- you don't need to get all of them, just help to clear the way so she can get through. Transmogrify items into ammo when needed.