I checked my list about 20 times and I have every ghost but I still haven’t got the achievement!! Anyone else having these issues!
You need to scan every ghost in the game to 100%.
If it’s not in the Spirit Guide it’s not 100%.
I thought that they don’t even show up on Tobins unless they are 100% scanned, my Tobins list is complete.
When you go to Replay Chapter it also tells you if you have the right amount of ghosts scanned; artifacts too.
I’ll try that and double check!
How do you know by looking at the meter if its 100% scanned?
When in Ecto-Goggles, the LED bar-graph on the left.
Easiest way to know if you have 100% is when the Spirit guide gets updated on the bottom right corner of the screen.
ok, I never noticed that, just the little pop-up that says its in Toben’s. Well, after I beat it on pro i’ll go back and find them.
I might have to start a new game all over because this one is probably glitched because I made sure that my spirit guide list was complete and matched the strategy guide! Unless im doing something wrong, this is driving me nuts! I even went back and scanned all the ghosts all over again!
if you look at the entry in Tobin’s SG and the areas where text should be is filled in with ------ then you know you haven’t scanned it 100%. Similarly, if you point the PKE meter at a ghost and the details are all filled with ------ you haven’t scanned it to 100%. A 100% scan will show the ghost’s attacks, weaknesses and back story. If all you see is ------ then you did not get a full scan. Make sure the center ring is glowing when you do the scan & it should pick up 100% right away. 
Are you online? I couldn’t get this achievement until I downloaded the patch they released for it. Then I went to the part where you do your first scan and the achievement popped up for me. Good luck!
I finally figured it out! It was a glitch, all of the levels said that I had all the ghosts scanned, plus my spirit guide was complete. So I was just messing around in the library and I scanned a Coal Golem and then it said that my spirit guide was updated even though I had 11 out of 11 scans and I already had it in my spirit guide!
Right after I got the achievement.
Not to get off topic, but I just want to know…what’s a kitchen flier and which part of the first level is it in ?
its when youre at the hotel the second time on your way through the kitchen after finding the generator. they are the flying pots. they were one of the ones i was missing too