The handcrafted graphics look fantastic. It has a very genuine DOS game look. Kinda reminded me of Wizardry 6. UI looks great. The windows and their borders looks very cool. I like the whole HUD arrangement. Using mouse on the buying/selling screen is a little problematic. It's too sensitive, the list scrolls down with the slightest move of the mouse.
Game is a little bit long and i think the combat encounters are too frequent. Quick save/load feature definitely makes the game more playable. I died only once at the last boss and lost some progress but i don't know if would play the game from start if there was no saving. I beat the game btw.
I like the implementation of weakness/resistance system in combat. It doesn't only apply to elemental spells, it applies to weapon types too, like blunt, slash and piercing. Also a very good incorporation of rock&paper&scissors theme. I think other themes are used very well too, especially cleaning up heroe's mess.
Having a quest system is nice but the kill x number monster quests can get repetetive after a while. In area where you need to collect the treasure chests, there are some spinners but to walk over the firs spinner at the start of the corridor, you need to walk backwards :) I found it out by pure coincidence. I think it should be hinted to the player in some way.
Overall it's a complete and polished game with charming visuals. Definitely a successful game and i enjoyed playing it. Nicely done!