thebestgameever

Being outnumbered is a scary thing, especially if your opponent(s) is skilled.

A few tricks that you can do in order to level the playing feild are

Use Hallways
___________________________________________
----O----X--X----X-----X-----X-----X--X----X-----X-----X-----X
O--------X----X----x--X----X-----X-----X-----X--X----X-----X-----X-----X
----O----X---X--X----X-----X-----X-----X--X----X-----X-----X-----X
___________________________________________
Though they outnumber you, they will have to come at significantly lower numbers at a time.

use Openings and Hallways
-----\
--------\
-----------\
------O------_______________________
---O---------------------X-----X------X------X----X-----X-----X-----X
----O---------------X------X-------X----X----X--X-----X-----X-----X
----------------------X-------X------X---X----X-----X-----X-----X-----X
----O--------_______________________
-------O----/
--------/
-----/

In this Case you can see that nomatter how many come, they will each be attacked like only 3 are coming at a time.
-THis makes it very difficult for the person that is trying to use numbers to their advantage since not only are they restricted. SInce you control an opening on the Other side, you have SIgnificantly more room for your units to move and attack with and more angles.