Because i found it quite challenging and decided to try again after i finished the whole alpha.
I managed with a level 8 character but i still found it tough. So, kudos to you.
It was indeed extremely challenging
I had to use the four grenades (2 HE, 1HE mk2, 1 flashbang) I had found up to this point, as well as two clips of 8.6mm ammo from the Marauder Assault Rifle, and about 30 save reloads ;-)
I was desperately hoping there would be some powerful weapon or something at the end, but there wasn't, which was quite disappointing... I wonder if at least Gorsky could say how impressed he is after you've cleared it and you go back to him, maybe give you some credits or XP or something?