Pandemic: Expert Guide/Playthrough - How to win HEROIC difficulty + V. Strain (Archivist/Scientist)

I'm the current UK Pandemic Survival co-champion and this is my Strategy guide/playthrough on how to beat the game on the hardest difficulty settings. Here I basically play a random game on the app and think aloud. I play 2 player, 6 epidemics, as this is the format for the official Pandemic Survival tournaments. Questions/comments welcome. Enjoy!