The Reactor Core

The Reactor Core is the twenty-first level of Metal Arms. After jumping down the tunnel into the lower levels of the Morbot Region, Glitch searches for the lift that'll grant him access to Mil City.

Trivia

 * Similarly to the Wasteland's Zombiebot inhabitants, this portion of the Morbot Region has its own population of adversaries known as Swarmers that'll relentlessly attack both Glitch and the Mils.
 * Unlike the Zombiebots, the Swarmers aren't identified by targeting reticules. Because of this, the Mils won't retaliate against the threats damaging them. Although they'll be heard and seen firing their weapons, this is merely reactionary. If the threat is "invisible" but is attacking them, they'll still fire.
 * Unlike the Zombiebots, the Swarmer population is endless, always emerging from the shafts around the level.
 * At the end of the level, when Glitch first responds to the rescued Slosh, his voice is un-synthesized, projecting Dave Wittenberg's unaltered voice.