As simple as the description says. Survive the first 10 waves of each of the 16 survival maps,
While some strategies are different, this is what worked for me.
I used the first few rounds farming points, going for the rampages and killstreaks, and using the weapons that enemies drop between rounds 1-5; the MP5 can be acquired fairly early on in most maps. If you can use those points to buy an LMG by around wave 5 that works wonders for aircraft and juggernauts.
Try to find an area in each map where there are only 2 or 3 ways enemies funnel towards you and set up a sentry gun or two in the enemies most travelled paths between you and their spawn. When the aircraft come out, find cover! Pop out in between their shots to slam them with your gun; it doesn't take as many shots as you might think to take them out, making missiles not necessary.
As far as predator missiles go, they are great if you have the points to instantly kill any Juggernauts or aircraft, and if you didnt know, they can be bought in the Air Support Armory.
I hope this helps, if you can hang out with the same strategy for another 5 waves, you can get