I need help finding all the scans. I have 90% scans, but I can't find the..

Maybe you didn't scan the bounty hunters or the bosses, other wise that is pretty much the hardest things to scan. You can also try:
Scanning weapons before you get them
Scanning your huntership
Scanning things that don't look like they can be scanned

Or, there are some things that you can't see without the scan visor, such as:
When you go to the docking bay, go straight up to the lane thingy that you have to go to to access the four platforms, stop once you get to the end of the lane. Turn on your scan vision, and you will see a mysterious blue thing come up. Scan it, and it will tell you a something very strange. Anyways, thats all I can think of. Anyways, when your done with an area, SCAN IT ALL!!! Lol, jk. Bye!

Did you scan all the Slenches and Cretaphids? Did you know that when the Slenches are on the wall, they are Slench ?A and when they are detatched from it they are Slench ?B? Did you scan all of the hunters Alt. Forms? (yes, in fact, you can) Scan around the High Ground area, there are these two things called Sarcophoguses, on is the Military Sarcophogus, the other is the Science Sarcophogus.

Hey guys, sorry I didn't post this earlier, but I actually found a walkthrough tha at the end of it had a logbook that showed where all the scans are. And, thankfully, I scanned all of the Slenches and Cretaphids. So now I have 100% scans and items and an Octolith on my Hunters Liscens! (If you didn't find out earlier, if you beat the game with 100% everything, you get an Octolith on your Hunters Liscens)

I'm so sorry to have wasted your time!
Imperialist

Just start a new game because there are some bits where you cannot go back so start a new game and go through the game again and hopefully you do it this time. I hoped I helped.

~Twilight_Sasuke~