Belly of the Beast

You'll have control of Raynor, Tychus, Swann, and Stetmann. Each of the four is a unique hero with their own abilities. Raynor has a powerful rifle that does high damage and can hit multiple lined-up enemies. Tychus is your heavy hitter and can throw area damaging grenades. Swann is able to throw out flame turrets that can protect a choke point. Finally, Stetmann is your medic who can keep your team healthy. In case one of your members does fall, they will not out right die. Any other hero can revive another by moving close to their fallen ally.

Swann's flame turret will sever the most use among the special powers. It can easily knock out huge waves of oncoming Zerg, leaving the rest of your party free to combat another squad. Periodically, you'll also encounter Dominion forces under siege from the Zerg. Getting close to these troops will add them to your control. However, normal grunts cannot be revived and will die if not healed.

You'll mostly be up against infestors and Nydus worms, both of whom will rapidly produce more troops. Work your way through whatever horde they make, and destroy the producer once in range. Raynor can detect enemies out of range, which will help provide intel regarding what you're up against.

Towards the end, you'll do battle with a queen. Raynor's sniper rifle is your best option for damaging her directly, while Tychus and Swann are best used for taking on her minions. With the queen destroyed and the cavern detonated, it's now time to escape. Lava will continually rise, forcing you to move to quickly ascend to higher ground. The Zerg haven't given up yet, and will attempt to block your path. As only your heroes need to escape, consider sacrificing a Dominion troop to distract the enemy.