

These enemies should be priority targets, as they can deal immense damage while at the same time being relatively easy to kill. The most dangerous grunts are Special Operations Grunts and Grunt Heavies, by virtue of bearing heavy weapons such as the Fuel Rod Gun and Pek-pattern plasma cannon or a piloting Ghost or Wraith turrets. They have been known to "spam" Plasma Grenades on the Legendary difficulty, which means that in a group of 10 Grunts, as many as eight of them will throw Plasma Grenades, one after the other, in an attempt to easily dispatch their foes. With the Catch skull enabled, Grunt Heavies have been observed throwing upwards of six plasma grenades. All Grunts are equipped with, and often use, Plasma Grenade, although higher-ranking Grunts such as Ultra Grunts and Special Operations Grunts throw grenades in combat more often and with better accuracy. Grunts are near always armed with the ubiquitous Plasma Pistol, although they can be seen wielding Needlers or other one handed weapons. Grunts working in cooperation with Jackals are very good at seizing the initiative to flank unsuspecting enemies as well. There are times they take advantage of their small size they can easily hide and ambush or surprise their enemies with an overcharged plasma bolt or grenade. Small groups of Grunts are generally used to slow enemy movements or deal minor damage to weaken enemy forces, and force them to waste ammunition and time. Typically, Grunts fight by having the Minor Grunts combine their firepower to soften and lower the enemy's shields, so that their more dangerous allies can finish off enemy units more easily. Most of the time, when their leader is dead, Grunts will run away, even the higher-ranking ones. Grunts usually fight in groups consisting of mostly low ranked Grunts, one or two higher ranked Grunts, and an Elite or Brute leader.

However, in groups they are destructive and violent.
