Before you begin moving in a level, locate the exit. At times they may be behind crates or other objects. Rotating the view if necessary to find it. After locating the exit, work backwards to find the optimal path through the level. This will allow you to check if you have enough pieces for your desired path, and to find which components you need to reuse. When you have two characters in play, you will begin controlling the other character the moment the first one goes through the exit. When trying to avoid falls or triggering an elevator, you must move that second character to a neutral space before allowing the first character to exit.