The easiest disco trip to do this on is the first on the level The Fairy Council. The disco trip is the last part of the level where you appear to be riding a device that resembles a rocket along a pink track. All you need to do for this trophy is do not fall of the track. You will know when you do as you will lose a point and have to be picked up by Globox's helicopter. Simply time your jumps well and do not focus on going for any of the jewels. If you do happen to fail you do not need to replay the whole Chapter, just go to the start menu and select exit game and then yes when it warns you about progress being lost. Then load up your savegame and you will be back at the beginning of the disco trip and you will be eligable for the achievement again.