There are many precious things at the level, but they are all unreachable. However, there is a laser that can cut wooden or stone obstacles. Use it to get the goods!
There is a laser that can help you to get the riches that are hidden at the each level. However, the power of the laser is not the same and when one can cut the wooden obstacles the other will be able to do the same with the stone. You will have a limited amount of charges so use them wisely to get all treasures on the level and then go to the exit.