The game - Challenge of the Dragon - Dendy | NES

A mixture of action and fantasy-themed fights. The hero is a thievish-looking type in blue pants and with a sword. You are attacked by one or more enemies. Until you deal with them, it is impossible to move on. It is difficult to hit enemies with a sword without taking damage yourself, but it is possible. There will be a boss at the end of the level. The first of them is a magician who moves around the screen in the form of a cloud and occasionally materializes, but only to get hit in the face.