[FG28_Kodiak]

The only difference between single missions and campaigns is

Normal mission (single or multiplayer)

using System;
using System.Collections;
using System.Collections.Generic;
using maddox.game;
using maddox.game.world;

public class Mission : AMission
{
// your code here
}

and campaigns:

//$reference Campaign.dll
using System;
using System.Collections;
using System.Collections.Generic;
using maddox.game;
using maddox.game.world;

public class Mission : maddox.game.campaign.Mission 
{
// your code here
}

So test a single mission with the first, if all running fine change it to the second