To be honest I have the feeling that there is a little improvement when you level up. From level one to level 20 is easy to reach, but to me it feels like i'm still like level 1. The damage that I get from the early enemies are still the same and even with better armor they still can kill me. I mean if you move from level 1 to level 20 there shouls be a big difference, but it totally doesn't feel that way. I think upgrading VIT is the best thing to do in this game.
What do you think guys?