The game - Densetsu no Kishi - Elrond - Dendy | NES

Cute toy with beautiful graphics. The hero is a knight with a sword, all clad in iron. The initial level is a forest with a large number of stumps of different heights, along which you have to jump. There are a lot of diamonds on the level, keys to doors and chests, the chests themselves, and, of course, a lot of evil spirits and vicious animals.