Being brash and charging in with strong overhead attacks might be enough to take out some of the weaker peons, but one wrong move can mean a quick death. (wccftech.com)
This does show off some of the flaws in the enemy gameplay however - basically, I can now simply move backwards as the Executioner readies his very slow overhead attack while I shoot him with a rifle. (gamerstemple.com)
Note that every character has a forward + medium overhead attack that hits crouching opponents, as well as a down + medium low attack, which can lead to combos. (tomsguide.com)