This achievement is quite easy to earn, even though the level is not short. As the Pastafarian, you can just keep running. The gaps aren't that large, and the light bridge can help you get over them with ease. Just keep your hand off the jump button, and know when to turn right or left, and you will soon earn the 50 Power cells as a reward.
For the Skater, you can just try to use his speed to get over the gaps, though, if he is too slow, he can still fall into it. Therefore, keep track to his speed.