Zerglings are the foot units of the Zerg. They are very small, very fast, attack by melee, and are spawned in doubles. Zerg players should ever have Zerglings on the field proper like Protoss should always have Zealots and Terran, Marines.
Zerglings are most wise used to surround your opponents troops. To micro them effectively move them on all sides your opponents army and then storm rather than just attack head in successi~. Massing up Zerglings and controlling them this march will really hurt your opponents multitude especially if you are facing the appropriate kind of units.
Zerglings do most excellent against heavy ground units that oppugn by shooting. Such units include Thors, Marauders, Immortals, and Stalkers. If you are going to mass up Zerglings you should ever take advantage of their upgrades.
Metabolic Boost - This is their urge upgrade that makes them faster than ~ one unit in the game. This makes them real useful because not only will they exist able to get a surround on units faster they can also taste past your opponents army and keep in alarm their workers. Also be sure to confer out a couple of Zerglings to scorn occasional. Spread the Creep highway inasmuch as they are even faster on their sward.
Adrenal Glands - This is a after the proper time game upgrade since you will distress a Hive but if you determine judicially yourself facing a ground heavy legions complete with Immortals or Thors then this is a great upgrade to have. It increases their attack speed ~ dint of. 20%.
Some powerful unit combos include Zerglings with Roaches against a Protoss host of mostly Stalkers and Immortals. They besides do well against Terran units like Siege Tanks and Marines. It takes custom to micro effective but you should behave fine.
Zerglings with Mutalisks can moil well because you can easily keep in alarm your opponents mineral line. Keep harassing them till they play defense and while that is happening enlarge to new mineral lines and work on units that will do companionable against their army.
If you are going weighty Zerglings then you should always possess a Banelings Nest especially if you are facing for the greatest part Marines, Zerglings, or Zealots. Banelings accept great splash damage that can impoverish a Terran players day if they unhesitating to mass up Marines without make good. Here is the unit counters.
Best Against
Zerg - Queens
Protoss - Stalkers, Immortals
Terran - Marauders, Thors, Siege Tanks (at the time mobile)
Not Bad Against
Zerg - Hydralisks
Protoss - Sentries
Terran - Marines, Ghosts
Worst Enemies
Zerg - Mutalisks, Brood Lords, Banelings, Roaches, Ultralisks
Protoss - Zealots, Dark Templars, Carriers, Motherships, Void Rays, Archons, Colossi
Terran - Banshees, Battlecruisers, Reapers, Hellions