Martian Mode

[Sundance]

Maybe, when the martians teleport into an area, it will temporarily disable radio equipment in the area they teleported into? (~5 - 10 seconds?)

I suggest this because I think that the way people treat martians may be similar as to how they treat syndicates or wizards (i.e. every crewmember and his mother rushing to get a piece), and since martians would probably be easily disarmed and weak at first, they wouldn't be able to take on a large amount of people early on.

Don't forget that the martians have their big ship in which ALL the martians are stored, the ship isn't like for one particular martian, it's a team effort. There's no teleporting into an area as such, they just exit from the ship (that's the main difference from Molly's idea and mine, is there's no teleporting and the spacepod)
But you raised a very good point. One of the weapons I was thinking about designing was the sludge gun which would mute the person from screaming, but that's only really any use if you're on your own and you don't want to be heard. If you are all in the ship, you want to be missing kept low from the AI and the screaming mouths of humans, so maybe you start of with an EMP attachment on ship so that it disables cameras and radios when you invade a particular section.