The Raider Brawler are the "tanks" for the Raider invaders. These brutes are blocking types who prevent all but Indirect Fire from getting past them. In addition to the tons of hit points, the Brawlers can also dish out tons of punishment. Their multi-hit nature quickly reduces armor on many non-tank units.
The Fists of Fury attack can catch players off guard when all 5 hits land on the same unit, scoring multiple criticals for high damage! Also, it has the ability to "reach around" blocking units with its range of 2. Though the "Contact" line of fire prevents the Brawler from directly targeting units hiding behind other units, if the Brawler can target a unit in the second row, some of those attacks can spill onto adjacent units, including those that he couldn't target directly! Fortunately, there is a good chance that damage will not spill out to one square, including the middle! So it is possible for an enemy brawler to miss a Super Tank ENTIRELY!
What makes them even more deadly is that their attacks, though technically tied to the same weapon, does not trigger a "global" cooldown. Generally, single weapons with multiple attacks will trigger a "global" cooldown, preventing a weapon's use the following turn, even if an attack is ready to go. What this means is that Brawlers can attack every turn, alternating between their two attacks while one is on cooldown.