On this level you will meet Tanks for the first time. The movement of Tanks is controlled by Blue Buttons. All of the Tanks on a Floor will turn around and travel in a straight line each time a Blue Button is pressed.
You will also find Green Buttons on this Floor. They control Passages. Each time you press a Green Button all of the Passages on the level toggle. That is, all Open Passages close and all Closed Passages open when you press a Green Button.
You will need to press the Green Buttons to open the various Passages so you can get to the Chips in the Rooms guarded by the Passages.
Finally you will find more Movable Blocks on this level. These Blocks are covering four Chips, but, be careful not to move the center Block: it has Fire under it. Simply pushing the other Blocks out of the way will move you on top of the Chips so that you can pick them up. The puzzle here is to be careful not to move the first two or three Blocks so that you can't get to the last Block.