That game is a masterpiece for me! There are some struggles; first of all - it's a really hard game, but I guess it's up to developer. I also would like to get more choices about my next character, after previous one dies - I enjoyed playing with spear gladiator the most I think - despite him having really bad armor (I don't think it is a good idea to bother upgrading armor for spear warrior).
Small issue (which I don't mind at all) is the fact, enemies don't have any capability to dodge traps. But on the other hand they have 2 potions later on; they can be lucky and block most of your hits, so it's good that they have some flaws.