Does anyone else feel that certain character choices can make the game much harder? For example I've chosen swordsmanship (currently I'm only level 10) and I'm having trouble fighting Letho, but all the guides I had a quick read of online say to use upgraded quen, throwing daggers or upgraded dodge, none of which I have though. So is it possible to miss a few key skills and suddenly have a lot of difficulty with bosses? or does it get better later on?