I'll implement it in my arena.
If you're interested have a look:
http://forum.thegamecreators.com/?m=forum_view&t=116175&b=25
In the build options you can either select "get x frags", "get the highest amount of frags in x time" or the first option. Mission? Goal? I have the German version, that's why I don't exactly know what the first option is called in the English version.
Anyways...you cannot pick up keys in multiplayer. Nor can you use victory zones and so on and so forth. What you can use: weapons, ammo and health objects. Weapons can't be mission objectives (only maybe when editing the FPE)...but the "flag" can be the health object. It's rather a "get the flag".
I couldn't find this anywhere in the manual but it works.
1. add a health object from ww2. Switch to single player. Edit the entity's properties, make it a mission objective...1.
2. switch back to multiplayer.
3. It does NOT work in the editor! You have to build your game first and select the first victory condition (not frags).
4. Run the exe. You win when you pick up the health object.
To make this more exciting I use remote doors in my game. I can assign switches to different doors (also in single player mode)...
Maybe two health objects work as well, set as mission objective 1 and 2. If it works (haven't tested it yet) to grab object 1 and then get object 2 it could simulate a "capture the flag". "Get it and get back to..." ... object 2 in this case.
I tested it with one object in my LAN and it worked.
coming soon...