This is a live playthrough/guide of Resident Evil: Revelations 2, Invisible Mode for Episode 4. You don't need very much ammunition for Claire's episode, and it isn't all that different from the regular campaign because all of the enemies are invisible anyway. If you haven't played on survival difficulty, there will be a glasp during the outside section that isn't there on the other difficulties, so be aware of that. Otherwise, this shouldn't be too taxing for you if you have made it through the other episodes. Get ready for the real challenge in Barry's episode!
Barry's episode isn't too bad until you get to the sections with the poison gas in the mines. That can be quite irritating, having to run back and forth to the places where you can get some air while trying to keep track of enemies. Use Natalia to try to keep an eye on things as best as you can. I would recommend skipping the first Dhurlga fight as well, because the revenants in that section are hard to snipe when you can't really see them and they are blindsiding you with their goop. Using Natalia there makes it a little easier to avoid the grab of insta-death. As for the "decontamination room" at the end, just pray that all of your enemies spawn so that you can get out of there. I had a glasp not spawn once, but the door would not open so I had to reload. Other than that, a little persistence and knowledge of enemy placement should get you through! The boss fight at the end isn't too rough. Just keep out of the poison gas!