The three start points at the bottom all work well. But the one that
seems
to work the best is when you spawn in the small room with the square
column
in the center.
As you run into the back room, waste the guy coming out
of
the glass room with your tommy gun (On PS2, this guy is sometimes not
there
but on Gamecube, he's always there). Go to the end of the room to get
the 2x
shotguns and position yourself on the other side of the ticket window
so you
can see the bots coming into the room as well as the ones that spawn in
the
glass room.
It also seems to help if you crouch. Keep your eye on the
radar
to see if your teammates are killing a lot of guys and to see when
enemies
are coming towards you. Around 30 seconds, check your kills. I restart
if I
don't have 6 kills. Then check your kills at 50 seconds. You want
around 13
here. Eventually you'll get a sub-1:10.