Then everyone must have impulse installed to be abled to install the game and its here my problem start.
We dont have access to internet on our lan party, so is there a way to install Impulse offline ?
Or can I do another way to be abled to play the game over lan?
Do i need to have a active internet connection to be abled to login to Impulse if I have a precreated account?
If your LAN doesn't have an internet connection, you can't use the .impulse file you made yourself. What you will need to do is download a pre-made archive from http://anywhere.impulsedriven.com
You will have to install Impulse on the machines, but you will be able to install from the Anywhere archive without connecting to the internet.
Of course, after the LAN party you should uninstall Demigod from the machines and all that 