Here's a technique NOT mentioned on the wiki. Remember the tutorial? Ah, what a nostalagic experience. BUUUUUUUUUT! When the game tells you that hitting bomb blocks with swords will hurt you, the game is WRONG. Bomb blocks damage all of the knights in the explosion grid around them, but they cannot damage any knights more than 1 grid away. Luckily, swordsmen can hit them with a sword from 1 grid away from the radius, and although longer swords might make this easier, they are not required. There are people that have accidently done this before, but I'm just listing it as a technique. Purely for swordsman because bombers and gunslingers don't have to worry about this.
(P.S) Why do swordsman take more punishment than the other classes? :<
Wuuuuut? Your punctuation is ok. But you need to actually explain. And swordies take much less punishment.