This game is so fucking flawed, goddamn, just annoying enemy placement, super time-consuming platforming challenges. Bullshit hit detection and control input specifically with the stairs, but despite all that the core game design is really fun. And the bosses are memorable. Some are amazing, surprisingly I found myself going back to this game, to play more despite my frustration with it. It's just a memorable, flawed, janky, annoying, hard as shit, fun NES action platformer.