Hmm yeah then maybe they should give us the pre-order maps soon, because that will give this game some legs until that mid-December patch is released. Those are all cleared for launch by MS/Sony so I don't see why they would hold them back, especially with Halo 4 and BLOPS 2 releasing in the next few weeks. The only reason I can see behind this is that the retailers negotiated some exclusivity period during which Capcom couldn't sell the maps.
In fact if the pre-order maps don't release before Halo 4 gets its hooks in me it might be hard for me to justify buying them.
Chinatown? I imagine you mean Urban Chaos, which is actually set in China proper.
I'd suggest playing co-op first, since it's much easier to get a handle on the way the maps play, the enemy spawns, and how to maneuver around the map when you have someone else playing beside you. Get all the time crystals and health pickups first, before killing any enemies. The most important thing is to make sure you never lose your combo, so if you need to use a magnum to shoot an enemy on the other side of the map just to keep the combo going, then by all means do it. Otherwise you want to always use either melee kills (shoot enemies in the face or in the arm/shoulder then run up to them and do the melee kill) or counter kills (hit RT right before you get hit by an enemy to counter them). These kills give you +5 and +10 seconds on the clock, which should help you go for longer.
