Dalek's Revenge

You have been captured by the Daleks and your only means of escape is to collect the ten keys and get to the TARDIS without bumping into any of the patrolling Daleks. Once all the keys have been collected you must stand next to the TARDIS door to be transported to the next level. After level 2 you may spot a Robotroid on the top row and while it is on the screen, all the ladders are electrified.