Shoot down every single bandit until the wanted criminal is drawn out. Assassinate the level bosses to proceed to the next level. You will have a wider arsenal of weapons as you progress and the bosses will get tougher.
Be a grumpy dinosaur and spew fire at dragons. Kill them and collect their eggs to recharge your inner strength. Be careful though, if you run out of fire, it's game over.
Take to the air in the meanest Helicopter brawl around. Deliver your own patented brand of Justice to the criminals whom have invaded the skies of your fair city.
When your balloon crash-lands in a wasteland of fowl creatures, its time to survive. Upgrade your weapons, fort, and turrets while you try to fix your balloon.
Ancient machines evolved and captured the people of the planet. Get rid of old machines. Destroy them using a catapult and improved bomb. You can gain extra points if you get the artifacts. Good luck!