Seems absolutely fine to me. I'm level 13 and there are some enemies I can kill with ease, some which put up a hell of a fight but I can still beat, and some which are just beyond me and can kill me in 1 hit.
I'd hate for them to potentially mess things up with a patch.
Im making sure this game gives me the biggest challenge possible for as long as possible. Playing on the hardest difficulty with my character who uses no magic, just potions and food for health. I very well may come unstuck at some point later on, but for now Im happy it takes me ages and ages to plow through any of the content, as it takes that long for me to look at the stunning visuals anyway.