This is a refined version of the default H.I.V.E. Mode. That is a gamemode similar to Horde. This pack is considered more an add-on than a stand-alone mod. See the original version here on GameWatcher's servers.
If the old multiplayer game modes are getting old or you find them too easy, then this mod may have the cure. It adds a new gameMode called H.I.V.E., which is a variation of Horde. You must defend strategic points and people to succeed in this mode.