It seems easy to do all 3 at first try but you will find otherwise as the level progresses.

Free the imprisoned chicks by blowing up their cages to complete a level. Don't forget to eat all the corns too before rescuing the last chick and keep your health at 100% for a perfect game score. Avoid all the snipers and entities that can send you to chicken heaven (or someone's dinner plate).

The game looks easy to play but your strategy skills will be challenged on higher levels.