Would work by depending on clans. It would take data from players within the clan from the following data: kills, deaths, raids, times they took oil or cargo.

Commands:

/topclans - Shows a list of the top 5 clans

Would look like this:

[Clan1]: 5 raids, 150 kills, 3 Cargo runs

[Clan2] -2 raids, 50 kills, 0 Cargo runs

The -2 will be from FAILED raids.