There are a lot Tumbleworms in here, hence the name. Hostile characters are Cactoids and Giant Cactoids.
In v3 beta2 of this mod, a total of 54,400 points are to be collected here. This is made up by 54 Lolly Twistpops, 55 Pink Lemonades, 6 Hotdogs, 7 Rainbow Sherbets, 4 Cake Slices and 4 Ice Cream Tubs (5,400 + 11,000 + 3,000 + 7,000 + 8,000 + 20,000 = 54,400). The number of Water Bottles are 50. Two (different) 1-UPs are hidden in this level.