The natural obstacles will not allow you to advance the fast as you may want. You can accelerate as much as you want, but wade across a river will not be easy for you.
You're a transporter and you need to carry the toys to their destination. Drive the truck carefully and don't drop anything on the way. Wait till you're all loaded before you start. Use arrow keys.
Take the truck with boxes to the lab. The road isn't difficult but watch out with the obstacles and don't drop many boxes. Use the W,A,S,D keys or the arrow keys to drive, the space bar for the hand brake.
Drive a big cutter truck, go to the marked place and destroy the right elements. Use arrow keys to drive, space bar to brake, Z to cut the trees. Don't injure the animals.