Just beat the RE7 campaign DLC Not a Hero on Normal (highest mode they let you play on first time). It's got some tough battles toward the end, and I was worried I wouldn't have enough ammo for the final boss. I ended up backtracking a bit and found 8 more shotgun rounds, and a couple enhanced pistol rounds that negate an enemy's regen ability. I don't think the final boss has such abilities, but it DID have more effect on him than standard pistol rounds or even shotgun rounds. I also ended up going back to the nearby save room and grabbed the 5 skill coins my Gold edition rewards you with. I hadn't planned to use them, but as I still had WAY less ammo than others I watched videos of, I figured I better not take the chance.
So I ended up beating that boss, and the incendiary rounds I think did the most damage. If anyone here ever plays this DLC, know that non fast equip selection is done a bit differently than in the main game. You can't just click on the item in the inventory and choose the Use option to equip it, you have to hold down click and drag it to the inventory's top row. What was most annoying about this is it made it MUCH slower to switch to another grenade type while the boss was bearing down on me. Shame on you CAPCOM for adding fake difficulty by nerfing weapon selection.
I am now playing the End of Zoe campaign DLC, and am only a little ways into it. Crazy old Joe (Zoe's uncle, the protagonist) has to find grub worms in tree bark and centipedes crawling on things and under rocks (occasionally you find the less gross crawfish, )combined with chem fluid to make healing vials, or eat them raw for a less potent heal. He also (so far anyway) can only punch attack and do stealth kill neck snaps. Let me tell you, that looks kind of odd when performed on the Molded creatures. The things Japanese developers cook up never ceases to amaze me.
[Edited] I ended up finding out you can also make spears from metal scrap and tree branches you find, and chem fluid plus tree branches makes stake bombs, which you stick in the ground and can remote detonate. There was also a surprise appearance from one of the Baker family at the end of this DLC that kind of took me by surprise. So I finished this DLC as well, and found it to be a bit easier than Not a Hero. There are however some suspenseful moments wading waist deep in the swamp wondering if you're going to be able to sneak past gators. You kind of have to pick which ones to spend your spears on, while trying to save as many as you can for bosses.