Clues, huh?
Well it's a platformer. You kill enemies, jump over things, and collect items. I don't know know what else to say. I could give some clues to the story, but did anyone actually pay attention to stories during the 8-bit era? The game has a leveling up system with EXP like Zelda II, which is pretty rare for platformers, but you can see that in the screenshot. Other than the leveling up, the game is pretty generic. I'll try to come up with an interesting clue or post another screenshot tomorrow.