Worm Hunt Challenge - Crawl 150m in 2 minutes and Free Roam Game

This game's challenge in Worm Hunt is to complete the 'Crawl 150m in 2 minutes'! Can't say that it was the easiest thing to do but I managed to do it eventually!
I then go on and play the game for a while trying to go head-to-head with some high-ranked players.