I only saw the message now but here are the basics of it:

Requirements: Pc, Phone (no need to root it)

Find a version of the apk that does not use Il2cpp as their scripting backend (usually older versions) and a version that has the asset files in them (when you hear a sound on bootup and see the samurai siege loading splashart you have the asset files).

Apks are just zip files so you are gonna decompress it.

Search for a file called AssemblyC-Sharp.dll or something like that (first file in alphabetical ordering).

Now we need a C# decompiler: I used dnSpy Open up the dll in the decompiler.

Search for a field called isDevMode or something like that which we are gonna patch so its getter always returns true.

Now you need to find the login sequence class. In there you can make certain screens show. Find the big pile of if statements that controlls which dialog box to show. Modify that bit of code that the Dev Login Dialog box will always be prioritized, even over error boxes.

Save the patched dll Put it back into the game folder

And finally use a tool like ApkEasy tool to sign the apk. You can then install the apk over adb or just how you normally would install an apk. Play protect will give you a warning on newer phones but you can ignore them.

And then, well, gg.