This shows the Survival Tree/Betty bug: Despite having noticeable amounts of armor, the Annihilator pilot gets warned about critical damage at 8:13 in the video. (that is, the game is telling him he has no armor on the badly damaged but not stripped torso). This is because Betty doesn't take bonus armor from the Survival skill nodes into account and ends up treating a small but positive armor total as being no armor left at all.
Edited by Brain Cancer, 11 April 2018 - 10:57 AM.