one of the best games on Sega Mega Drive.
The only thing is that the music is not perfect, but everything else is very good. I loved getting the infinite sword in the dungeon.
I also loved getting big red hearts in the forest (to the left of the castle), which add either maximum life or regeneration, I don't remember exactly. There you had to kill zombies in the forest and there was a chance that loot would drop.
P.S. there is also a version for sega saturn. The graphics are a bit better there. Well, correctly, they are different visual. If anyone is interested, look at the screenshots or gameplay in Internet.