The soundtrack and artwork were nice, and the level design did a good job of making the castle seem large and interesting.
On the other hand, it was difficult to tell when things were hit, and there didn't seem to be much of a point to fighting at all -- it seemed better to just skip every enemy instead of risking being hit.
Also the skeletons' aim seemed off. Sometimes they would shoot straight upwards, and sometimes the bone would disappear the moment it left their hands.