So, in an very easy mode playthrough, (which seems to be pathetically easy compared to easy mode) I was going through the floors, and then on floor 4 I had opened all the doors. I decided to do my usual crystal carry set up, with my fastest hero (sara numas) carrying the crystal and the rest following her. But for some odd reason, she ran REALLY slow. Like 10x slower than normally carrying crystal. Because of this I lost all my heros trying to protect her and got a game over for over 40m of play. 


Is this a bug?