JiG writes: "We're not entirely sure what's going on here, since no story whatsoever makes an appearance. The dopey grin the target wears sort of puts one in mind of the Beagle Boys, so let's just pretend you're trying to keep them from breaking into Scrooge McDuck's moneybin. With extreme force. Each stage consists of a certain number of these no-doubt dastardly baddies, and you need to get rid of all of them to proceed. You have a certain amount of grenades per level, and you can keep track of how many you have left in the upper left of the screen. Run out, and you'll be forced to restart."