Nice game! It reminds me of Isaac, but it plays quite different. I managed to beat the game after a few tries, it was quite challenging. I had a hard time trying to get past the black ogres and skeletons. The boss fight is pretty neat. I like the variety of attacks he can do (not the summoning one!) The presentation is very good! The pixel art (especially the boss intro), and the music are well done.
I think the game would be better if it has more power-ups and types of enemies. Also more levels if possible. Some difficulty adjustments might be nice too.
Looking forward to the updates!