pay attention to the one holding sword. keep attacking him until you see the one holding axe rises his arm and try to attack you. avoid the attack by rolling sideway. his axe should be stuck on the floor. once its stuck, quickly go behind him and slash your dagger few times until you'd be given chance to perform double speed kill. use it. repeat it about 2 or 3 times to kill those two generals.

when you start, go for the guy with the sword first. then when the 2nd guy with the axe
comes after you and raises his axe to kill you roll the side and his axe will get stuck in
the ground. then attack his back. if the other guy tries to attack you while hitting the
guy with the axe press A+X+Y and he will jump over the guy and continue attacking him.
keep doing this until you can to a speed kill after that you're almost done keep doing
what you did at the beginning with the guy with the axe and eventually he will die. takes
a couple of tries to get it right but you'll kill him eventually. Good Luck!!