As commissioned by the UPA - you have to defense your system from invading forces

Save the goldfish out of the frying pan and put them back into the acquarium.

Choose either one and see if you can defeats your opponent.

Shoot down invading troops using your gun. Upgrade your castle fort, and get sniper guns.

Shoot down the terrorists holding up this building use you scope to zoom on them and fire.

Shoot down this celebrity/magician while he swings above mocking you.