Thanks for sharing the video. The hunter took out my scout on the return from the first switch. I had one fewer mp than he had in the video, but a penetrating hit on a solo scout will take them out quick.
Playing ST2 1.0.23 on: LG Nexus 5X 7.1.1 Rooted Kindle Fire 220.127.116.11
Kanly Yeah, that first switch is usually the only one you might have trouble. I'll often have a Soldier cover the Scouts retreat from that switch, the rest of the mission typically goes as the video shows.
You can squeeze one more MP than contributor does by leveling up Pressing Need for Capt, but it's still six turns. Just nice to have the Scout one extra tile out of the Chambers!