The wiki article for Durasteel Bars says: I just completed that mission, and there were no Durasteel Bars given. I'm guessing this was a change that hasn't yet been updated on the wiki. Just want to confirm that's the case and that nothing went wrong on my end - did anyone else recently get Durasteel Bars from this mission? (I was hoping to be able to make a Pixel Compressor finally. Too bad.)
They have a chance of being in the chest at the end and they can definitly be in there (tested it). ~ Iris ~
It is not guaranteed. Of the 5 or 6 six items picked for the treasure you've only a 10% chance that one of the slots is 20 durasteel bars. Well, it is 10% for the first item. If you don't get it for the first item the odds of being the second, third, fourth, etc. item goes up. But still, it is not a 100% chance. I think the only thing that is guaranteed is the codex.