This was an idea I had for a piece of equipment for the human team to use.
You could equip this from an armoury in place of your main weapon (So if you have this, you can only have a blaster + inventory items/armour) The idea is that primary fire makes you temporarily invisible (however you can still be heard) and prevents you from showing up on the aliens' human-sensing-thing (The red and blue dots which appear to show near-by enemies) however alien defenses and the overmind still sense you and are able to attack. The ability slowly recharges when not in use, and carrying a battery pack extends the time you can remain camoflaged.
The secondary fire would be a sort of beacon, placing a marker, similar to those used by aliens to show near-by humans, showing your team which direction you're in. This could be useful for located and marking alien structures so that better armed players can destroy them, but you cannot be camoflaged while using it.
Not being a coder, I'll need someone else's help in order to make this work, but I can make a model (In .obj format) and textures for it.
