hey I'm having some trouble storming the fortress, I get in and stay hidden from the targeting gun as best I can until I shut it off and then I have to face the boss, but by the time I get there that targeting gun took all of my health and my only waterskin and a full stack of berries so by the time I get to the boss I'm at a sliver of health and I have nothing to heal with, do you have any tips or anything I should backtrack to do to prepare, I am using the jungle armor because I couldn't find any other schematics besides wrist guards dropped by a bug if there are any other items or upgrades I should get please let me know because I'm stuck here.
A pretty easy set of schematics to get are the rubber set, all you need to do is build 4 sheers (like the one you used to get to the boat in swampland) and open the 4 locked chests on the map (1 is in a random start room). you will need a lot of rubber but it's a good set to have. And regarding the gun, if you pay close attention it has a 3 burst fire followed by a cooldown that you can use to your advantage.
I also had trouble.
If you can craft the bowgun and/or better armor, that might help--unfortunately I don't recall where I picked up the schematics/parts. Other than that, apples heal a bit more than berries, and play around with cooking--there are some foods that slightly increase your speed, attack, and defense, and last all day. So you can eat them in the morning and still carry a full stack of healing items.
For the automated turret, the key is to stay in the shadows or behind cover. Use your dash ability to get between shadows, and once you start getting close to the turret, pay attention to the timing. If it can see you (green targeting reticle), it fires three times and then pauses--so get in a location where it can target you but there's something blocking its fire, let it shoot the obstacle three times, and then you have a few seconds to push the block before getting back behind cover again.