What difficulty are you playing on? What class are you playing?
I'm playing on core right now, and I literally just finally finished Act 1 10 minutes ago. There were some fights that were difficult, like the bird demon in the market, and another one in the gray keep, but if that difficulty at least seem challenging enough while I'm learning the game.
I really am enjoying the game though. I haven't sat down to invest a good number of hours into a crpg and a long time, and this one's really scratching the itch. I do notice that any of my range characters, other than Lann who is a murder machine, miss pretty often. I've also been Auto leveling most of the companions, and I might go back and try to respect them once I get a better grasp of the mechanics.
It's still a lot of fun and there's enough of a challenge when I get caught off my guard that's keeping me excited to continue playing. Thinking about ramping up the difficulty another notch now that I'm in Act 2 and see how that goes.