Here's my setup: I kill everything on the bridge, but I
leave the grunts alone (I flip over all the shades with plasma grenades, so
the grunts can't get in.)
Then I run in to the other door (towards the elevator)
and I let it checkpoint, but I don't cross the loading zone... then,
eventually, the grunts on the bridge go to sleep... sometimes they will just
patrol endlessly.. and i pick them off with the pistol.
Try that, watch the radar and wait for them to go to
sleep... then try to wake them up with the flashlight... [posted
on HBO]
-FrogBlast
Check these posts for more info (thanks to
Surrept and others for the investigation):
http://carnage.bungie.org/haloforum/halo.forum.pl?read=136843
http://carnage.bungie.org/haloforum/halo.forum.pl?read=137182