Information on certain things and boss battles – War Tortoise Review

Alright, I must admit, this is a great game. Great graphics, amazing gameplay, a little simply mind you, but good all round game. But I'd really like to know what some things are. For exactly, what exactly does the Satellite Tower do for you? All the upgrades show is "Target" and "Damage". What does this do? If there is some way for you to update the game where it gives a brief description of each unit and their abilities. Would be great. Also, why aren't there many boss battles? Is there a specification that you must reach to activate a boss battle. It would be a great help if we had more boss battles. Thank you.
Review by Laser weapon on War Tortoise.