Cultivation

Three Main Blocks of Cultivation
Three building blocks made up a soldier's combat ability:
 * 1) The Eighth Mental Field (a.k.a. “EMF” or the “Sea of Consciousness”)
 * 2) The Genome Nuclear (or “GN”) force
 * 3) The METAL suit (Mental field Enabled Tactical Assault of Liberty Suit

The Genome Nuclear force was the incredible energy stored in the strands of human DNA (the Genome), which when released, instilled the human body with superhuman strength and combat ability that surpassed the Zergs. It made an ordinary human soldier only fitted to be a Zerg's lunch into its most dreaded opponent.

The METAL suit could further maximize the GN force output while providing a decent protection against the Zergs or the environment. The current generation of METAL suit looked much different than it was a few centuries ago because of the constant updates from the FFC Corporation over the course of four centuries.

The Eighth Mantle Field was the key to activate the Genome Nuclear force. It was the deepest layer of human consciousness, and only when this layer has been fully released by an individual would he or she be able to wield the GN force. The process through which the EMF was fully released in one's current consciousness was called the "Mind Opening Operation". This involved a relatively straightforward procedure and the chances to successfully "open" one's mind were also high. Only after the "Mind Opening Operation" and with the GN force at their disposal could one stand face to face with the Zergs and win.

Tactics

Within each subgroup of humans, genes were further branched into major Families as were the training methods. Out of these different training methods evolved distinct combat styles, usually recorded in a canon called the “Tactics”. Each family created their own combat tactics that had a decisive advantage in the form of unique coup de graces, and the methods to deploy these coup de graces were the greatest secret of any tactic, usually known only by the closest members of the family.

The title for the most powerful tactics undoubtedly went to the “Tactics of the Valkyrie”. The canon containing the “Tactic of the Valkyrie” was kept in the hall of Valhalla, the human's most sacred place which was said to be located in the Astral Realm. Only those who earned the privilege of entering Valhalla have the honor to study the “Tactic of the Valkyrie”.