Yes, indeed, this happened with a short cutscene but only during my 3d playthrough. But this fight only gave me a golden hammer, which is pretty much useless in the final executioner chamber.
Seriously, I get through the initial horde fairly easily, but Seb and Joseph are just impossible to beat unless there's some glitch. Even with full health and armor they bring down your health bar within 2 seconds. Even if you have one or two aid packs laying in the floor left in the fight... Even if you hit them with rocket launcher three times or so, they refuse to die. There's just nothing you can do they manage to snipe you from anywhere. So people tell me the glitch that's needed to beat this.
I have all weapons fully upgraded except for one '?' spot. I suppose that's what you get for beating this. I looked on youtube but the only guy who beat this fight did it on PC with a mod that made him invincible.
*** Let me just quote what the guy says who uploaded the invincibility video: ***
Published 26 May 2015""I can just imagine the kind of conversation that took place at tango gameworks while they were deciding what to do for the new game challenge in the executioner [. . .]
"bro i have another idea"
"listen its hard enough already most players would've died like 10 times by the time the RPG Sadist spawns"
"Bro we could like... trick the player into thinking the execution challenge is over... and then throw sebastian and joseph at them. and make sebastian start firing at the player before they even regain control."
literally tho if i didn't have infinite health i would've died around 30 times in this one video.""