How to play co-op? (Hunted: The Demon's Forge)

I don't want to Skype, HOW TO ENABLE THIS VOICE CHAT IN THE GAME??? Maybe there is a hot key or something else, everything is turned on in DFEngine.ini and the sound does not go in co-op over the local network ???? Who knows the solution, tell me, but not SKYPE,

and without an Internet on LAN it can not be played?

I want to go with someone thread.
current do not disappear after the first mission forever
skype : suzie_diamond the
microphone is obligatory. Better through teamspeak.

Darzamat
and without an Internet on LAN you can’t play it?
It's easy there is just an item, a local network, when you choose a joint passage.

ehh .. I still won’t play on the network / Internet ... it’s a pity, but I wanted to :(((
can someone tell me how to play on the Internet?

Instructions from Steam
How to set up a game with a friend over the network
A very simple and effective guide:
Both download and install Radmin VPN (radmin-vpn.com)
For those who want to be a host:
2.1. In the tab "Network" item "Create a new network"
2.2. Come up with and enter a network name and password
For the one who wants to be a guest:
3.1. In the "Network" tab, the "Join an existing network" item, enter the network name and password invented by the host.
You are great, now you can enter the game and go through the prologue, so that you can create / enter the lobby
4.1. For the host, select "Adventure", "Local Network", "Create Local Server" in the game menu, now the server has been created
4.2. For the guest, select the item "Adventure", "Local Network", "Join the game" in the game menu, the host's game should appear in the list, select and enjoy the game.

PS I checked it works)))