Also, on the levels with the raiders, I make sure to have several laser turrets around the perimeter. When the raider capsule lands, I switch all of my workers to the "defend" job and select the capsule for attack. If you have five or more workers, you should be able to defeat the raiders. Once the battle is over, I deactivate the "defend" job, and reactivate the other jobs.
The controls are terrible. The slightest tap and you go sliding across the screen with no way to stop. The challenge of fighting the controls outweighs any enemies.
Game seems neat enough, but the crippling control issues make it unplayable. As others have said, the character will not stop running, or will not jump when the button is pressed