The first time tricked me. Two of them just popped up, and they got me. Not the second time.
I'm a bit ashamed to admit that last battle had me dead at least 10 times, lol. I had no ammo and hardly any health, and every time they would flank me it was fatal. I finally just used my nail bomb on the two armored guys in the back and ran my a s s to the door heh.