Level 1, being an underground tunnel (Series 1) or a cave (Series 2) had the first four steps, with Level 2 being a street (Series 1) or underwater submarine corridor (Series 2) having the next six steps and level 3 being set on the rooftops (Series 1) or on a bridge high in the cloudy sky (Series 2) having the last eight steps in Series 1, and the last ten steps in Series 2.
Level 1, being an underground tunnel (Series 1) or a cave (Series 2), had the first four steps, with Level 2 being a street (Series 1) or underwater submarine corridor (Series 2) having the next six steps and level 3 being set on the rooftops (Series 1) or on a bridge high in the cloudy sky (Series 2) having the last eight steps in Series 1, and the last ten steps in Series 2.