This is how I can consistently get serpentine camo for viewers and how I complete it completely solo in DMZ. Its actually not as hard as people make it seem. I try to avoid the hot pvp areas at each location and usually don't encounter other players. A riot shield on your back also helps when trying to run Serpentine as you will spend a lot of time running away from bots.

List of items!

Ancient Gun Oil (Koschei Barter)
1 Diamond Bit Drill
3 AQ Laptops
1 Chlorine
1 Damascus Tag
Bombmakers Blend (Ashika Barter)
1 Bombmakers Screwdriver
1 GPU
200k Cash
Ancient Gun Oil
Premium Liquor (Vondel Barter)
1 Bullfrogs Blow Torch
2 Calling Cards
2 Vintage Wine
1 Bombmakers Blend
Blackcell Hand Cream (Koschei Secure Buy)
1 Medic Vest
1Tattered Lab Notes
2 Delta Board
1 Comms Vest
1 Server Tape Orange
1 Formaldehyde
1 Stealth Vest
1 Server Tape Black
1 Chlorine
1 Premium Liquor
Serpentine Camo (Zaya Barter)
1 Chemist Acid
1 Skeleton Key
1 Heavy Chopper Fuel
1 Blackcell Hand Cream

0:00 Intro to Serpentine
01:07 Step 1 PREPARE!
05:15 Step 2 Ancient Gun Oil (Koschei Barter)
15:03 Step 3 Bombmakers Blend (Ashika Barter)
22:45 Step 4 Premium Liquor (Vondel Barter)
26:19 Step 5 Blackcell Hand Cream (Koschei Secure Barter)
30:37 Step 6 Serpentine Camo Finale (Zaya Barter)