I love the style I am a HUGE sucker for pixel art games and retro, and you did yours well! I loved the look!
I loved exploring for new weapons!
The bugs I encountered was the background music was a bit to loud (not game breaking) and if you get either the short sword/dagger and the sword they lag IMMENSELY when hitting monsters. I was able to cheese the boss by switching from bow-dagger-sword, and just stood next to him. When the lag stopped I switched to the dagger and it started up again, and repeated till I died cause I didn't have enough score.
I think this would be a REALLY fun mobile game! I love it!!