I couldn't believe they threw inat the very last minute too. It completely threw me for a loop and before I understood what was happening I was a goner. I was actually pretty fucking annoyed by that. Hehinfected
I loved that when I first played the DLC.
The entire game I was waiting for survivors and infected fighting at the same time while you were in the middle, it only gets toyed with a little bit until they take it further there
But yeah, I found the final encounter to be brutally hard in general, hardest part in the entire game.