OMG I've been farming the final battle forever and I have not seen a single slice of friggin pizza! I'm like 1 away with the 3D glasses and 2 more of those dropped but I didn't want to pick them up otherwise my other one would glitch. I swear can Gearbox ever release a DLC with out glitches?
This is so annoying for a few achievements. I've farmed like hell and only have about 4 or 5 pizza slices and 5 oilcans and bobbleheads, but plenty of panties and fish. I don't know what the hell they were thinking in that you could still collect those stupid parts long after that mission is done but can't get more than 2 or 3 needed collectibles in 2 hours of farming
It's an achievement glitch and item drop glitch where you'll get a very small percentage of the items you need and if you unlock the achievements out of a certain order, they glitch and lock the rest so you can't get them. I'd find the URL from gearbox but I'm too lazy and cold right now
I've played every day since the DLC has come out and have put about 11 hours into it, and have found exactly ONE pizza slice, and that was yesterday I believe. I have more than enough of the panties and fish (though the panties didn't start dropping until I was finished with the story). I have a bunch of oil cans but not enough for the achievements. I'm also probably about 2 or 3 bobbleheads short of the achievement, but I haven't found one those in days. As for 3D glasses, the achievement didn't unlock until I had about 6 or 7 of them, and they were incredibly rare at first, but now that I have the achievement for them, they drop all the time.
These achievements REALLY need counters, both to make it easier to keep track of how many of what you have and to better ensure that they won't glitch.