These slaves to the Lich King have one of the best hero combos in the game with the Death Knight and Lich. Their Crypt Fiends are available at the beginning of the game, and are useful all the way to the endgame. Undead are a race that requires a high damage, hit-and-run play style. The Shaman's Bloodlust ability gives a huge damage and attack speed bonus, while the Witch Doctor's Healing Ward ability can make that high hit point army all the more sturdy. The Blademaster hero has the highest DPS of any unit in the game, and is often complained about by the community for being overpowered
The notably beefy Orcs have the highest hit points of any race, and their casters are certainly nothing to scoff at. Players should be sure to utilize upgrades at their blacksmith to really give their army a boost. Their casters also possess some of the best spells in the game, particularly the Priest's Inner Fire ability, which gives a huge armor and damage bonus. Humans also have the strongest base defenses, making them the best at 'turtling' among the four races. This also mean that they often have lower health, but their armor can certainly make up for this. Human has low population units, meaning players can get more units before having to build more farms.