Yo! I didn't expect you to go that far. You are about to finish the game! That's insane.
I'm actually surprised that you made it this far. If this is true, you've passed the hardest part of the game, since the first half of Retribution contains sections like prison and underground lab, which have two most difficult monster chase level in the game, and you beat them all!!
I replayed the game a couple of days ago and admittedly, the way I design these monsters and levels back then were pretty weird. Sometimes it feels very cheap for the sake of being horror in my opinion.
About the part where you stuck, you just have to keep running forward, don't go back, Edwin won't catch you. XD