The leveling and combat feel decent, and while the grid squares are a little small that is mostly made up for by the speed of movement. The graphics are solid (although you should really be using the 'Nearest' texture filter for pixel art), and the lack of audio doesn't hurt too much. The menus feel a bit clunky - a decent chunk of the time I simply couldn't pull up the pause/item menu. Also, potions didn't seem to be doing anything?
I couldn't beat Cthulhu, but that felt about right.