So I'm playing away on nightmare and have a ripper run through the big fight where you must destroy the 4 cooling cells. I get through an absolute slog of a battle to find that there are no more enemies and I cannot progress.
I even received the point for winning the fight...but alas, no cigar!

I have also noticed enemies getting stuck in walls on occasion. Looked around, but nothing. Anyone else getting these issues?

Maybe it'll work out on my next play through? Sheesh...