I'm primarily a console gamer (I feel a bit nervous admitting this on a pc game forum ), and the few games I play on pc are usually tbs'. As such, my keyboard and mouse skills are very clunky, and this made my first encounter with the water monster complete hell. I kept missing jumps, and I was only able to proceed through the section after I was killed and the monster disappeared.
My lack of coordination with the mouse and keyboard is further demonstrated in the sewer when you have to sneak past the brute. As I was setting up to throw the rock I accidently dropped it, but it didn't make a particularly loud splash in the water so I figured the brute hadn't heard it. I looked down to pick up the rock, looked back up again, and I think you can guess who was standing in front of me.