Survival Strategies: Overwatch

I'm going to outsource this to TheMilitantPo3t:

Here's the map with the armories marked:

Just thought I'd add that Overwatch doesn't fit into any of the 4 existing tiers for it's starting loadout, or it's wave progression.

Tier 1 starts you out with a Five Seven.
Tier 2 starts you with a USP45.
Tier 3 starts you with an MP412.
Tier 4 starts you with a Five Seven and an M16.
Overwatch starts out with a Five Seven and an 1887, and Extreme Conditioning, so it's effectively a tier 5 map.  We'll see if Black Box is also tier 5 or something else.

Boss waves:
4 - 1 juggernaut + 1 helicopter + guys and dogs
9 - 2 juggernauts + 1 helicopter + guys and dogs
14 - 2 juggernauts + 2 helicopters + guys and dogs
19 - 2 juggernauts + 2 helicopters + guys and dogs
24 - 2 juggernauts + 3 helicopters + guys and dogs
28 - 2 juggernauts + 3 helicopters + guys and dogs
32 - 2 juggernauts + 3 helicopters + guys and dogs