Zombies vs Penguins

Zombies raised from the dead on Antarctica cemetery thanking to a crash of an airplane with chemical wastes. Who can protect local animals? It would be a heeled penguin and you are in charge of him. Complete 40 levels of the joyful game Zombies vs Penguins hitting dead men in each level. Penguin's bullets ricochet from walls and other objects. In such a way you can destroy plenty of dead men in different parts of the screen just in one shot. The less shots you make - the more stars you win. Some zombies stay on the open spots and it is easy to shoot them point-blank. But some of them are hidden from you in shelters, so you have to work out trajectory and strategy of your shoots and actions. Head-shots are highly-prized in this game.