HOW TO START MODDING HALO WARS 2
Step 1: Install Halo Wars 2 on Windows Store.
Step 1.1: Start the game.
Step 2: You need to dump the game using UWPDumper with admin rights. Download it here, how it works is explained here.
Step 3: Drag the new DUMP folder to your desktop. In case of a error message, try WinRar or change your folder permissions
Step 3.1: Make sure you moved the DUMP folder out of hw2's temp folder, step 4 deletes the temp folder.
Step 4: Uninstall Halo Wars 2.
Step 5: Delete AppxBlockMap.xml and AppxSignature.p7x inside the DUMP folder.
Step 5.1: Change the game version in the file AppxManifest.xml which is at line 10 to a higher number, example 1.11.2927.2 .
Step 6: Go to your Settings-> Upgrade & Security->For Developers and change your Use developer features to Developer Mode.
Step 7: Put this bat file, download here, into your DUMP folder and run it.
Step 8: Edit some files in the games, if you add a new file you have to reinstall the dumped game.
In order to load changes, you have to change the old file to the new one in filemanifest.txt and remove the pkgs that overwrite the xmb/xmls, which would be for db/lists the lists.pkg.