Campaign - Sewer

The Sewer is the first campaign area, and consists of 7 training levels, and ends a boss, like all other campaign areas.
 * Training 1: Weapons
 * Training 2: Hazards
 * Training 3: Utilities
 * Training 4: Physics Objects
 * Training 5: Water
 * Training 6: Darkside
 * Training 7: Worms
 * Boss: Poisonous Pete

The missions start out with cut scenes consisting of Don Keystone talking to your worm, often giving an objective, cut scenes also come up in the middle of the mission to give more info, he also hints that he is making a Wild Life Documentary about the worms.

The training levels are really easy as Don Keystone and pop-ups tell you exactly what and what not to do. The boss is also really easy as the enemy aren't aloud to attack you yet, so it's a lot like the puzzles.