Demolition Trooper

Demolition Troopers are members of the Galactic Federation who are outfitted with explosive weaponry for special missions. While capable of destroying the strongest of barriers, they are not very good at combat, due to lighter armor, and often rely on others to cover them while in battle. When the only way to the objective is straight through an obstructing object, Demolition Troopers are called upon to make it happen.

In Metroid Prime 3: Corruption, Samus is charged with watching over twelve Demolition Troopers after she disables the Pirate Homeworld's defense system. These Troopers will clear a path to the Phazon Seed. Meanwhile, the player must defend the Demolition Troopers from Space Pirate attacks. Four of the twelve Demolition Troopers are required for the final door. If there are less than four surviving, the player will get a game over. The easiest tactic for getting them through to the end is to go right up in the face of the space pirate so that he can't shoot around you. You can than tear him apart(just make sure you use missiles to stun him for a second so you don't lose too much health).