Survivor Mode Maps: http://www.speedrun.com/ai/thread/ocr70
(UPDATE: Lost Contact was patched on PC, which fixed most of the problems. It now has the same rewards as the console versions, and the bug in Stage 10 is fixed.)
This is the route I find easiest. Stage 6 is the hardest by far, unless you're playing as Amanda. The rewards are not as important as they were in "Safe Haven", since you're not required to kill any looters or androids.
00:07 Stage 1: S6 Emergency Power Plant
02:32 Stage 2: S6 Emergency Power Plant Boltgun & Ammo
04:54 Stage 3: Lorenz Private Wards Stun Baton & Charges
11:15 Stage 4: Lorenz Private Wards Components & Blueprint
12:46 Stage 5: Lorenz Private Wards Flamer Fuel & Blueprint
15:28 Stage 6: Lorenz Private Wards Flamethrower
21:02 Stage 7: S6 Emergency Power Plant IEDs
26:57 Stage 8: S6 Emergency Power Plant Ammo & Blueprint
32:07 Stage 9: Lorenz Private Wards Flamer Fuel, Ammo & Blueprint
36:01 Stage 10: S6 Emergency Power Plant IEDs