The game - Booby Kids - Dendy | NES

A baby in blue overalls and a helmet runs across the level from dragons and cavemen. He has a kind of weapon at his disposal: he can dig a hole into which enemies can fall, and then bury it together with the enemy. Along the way, the guy collects some items. After some time, the exit from the level opens and you need to have time to run to it. Otherwise, the exit will close until the next time.