Also is it possible to get those 2 trophies as well as Mostly Flesh and Steel in one run? They didn't unlock on my 1st playthrough for some reason so I thought I might get these 3 done in the next run, but I'm worried it won't be very doable because of that bit with Granny Rags's key. --- PSN: ilikethispart
First of all, you should never NEED to kill hounds. They can either be avoided (prefered) or sleep darted. A sword will alert them to your presence and a pistol will alert everyone. Why use regular bolts when you can just sleep dart them?
It is *possible* to get these along with Mostly Flesh and Steel. It's just difficult without Blink level 2 and (to a lesser extent) possession and bend time.