Sentinel Returns Submitted by: rickHH Hints: ------ At first, you start off with only 10 units of energy, represented as 3 robots and a tree. You will have to be able to calculate the amount of energy you have at a glance. Since each tree is worth 1 point of energy on the landscape, each boulder is worth two, and each of your robots is worth three, that is how your energy is represented. A gold robot is equal to 5 normal robots, or 15 units of energy. The basic guide is simply to look at the amount of robots you have, and multiply that by 3.