Ok, so hit a hard bit now.
Went up the stairs to the cathedral, killed the two giant knights, went through the gate to the right, down the stairs and killed the three flying demon guys. Then walked along the downward walkway, while some guy shoots at me and get to the square area with two more flying demon guys. Managed to take them out and walked up the long bridge to the building and the two archers.
I'm having trouble getting past the two archer guys. Only one of them attacks me when I get to the building, but the ledge is so narrow it's impossible to flank. That and he hits so hard that I lose loads of stamina and have nothing to hit back with.
Not enjoying this section.