From looking at your image, it looks as if your device is forwarding your ports to an IP automatically - I couldn't see a section where to enter your IP Address. Not sure if this is going to be a problem or not, but try it and see what happens.
In the "Source Ports" fields enter '6000' in the first box and '6200' in the second, and the same again in the "Destination Ports". This should open all the needed ports for Demigod.
Also, in your Demigod install folder on your harddrive, for example mine is C:\Program Files\Demigod, go to the 'Bin' folder and run the ImpulseReactorOptions.exe file. Specify the same ports - I believe Impulse reactor will only let you use 6002 - 6200 - to ensure Impulse is using the right ports when connecting.
Best of luck!