Ugh. I had a Heavy Plasma with HEAT try to take to take down a Sectopod. Should've been able to drop it in two hits or so. Of course, there was no decent cover anywhere near the damn thing, so he had to shoot from far away. He missed every shot for three or four turns. At the same time, when my assault tried to flank, she trigged four elite Mutons.
R.I.P. that squad