The game is a lazy console port. While it has native controller support, it doesn't feature any controller glyphs, so all your on-screen prompts are for the mouse and keyboard.
Imagine my surprise when I dug into the assets and discovered that there already are PSVita and PS4 glyphs in the files!
Unfortunately, they are low res and don't cover all the buttons. So I've decided to make my own glyph pack mod.

First, download the mod from HERE[mega.nz].
Unpack the contents of the archive to \steamapps\common\GodWars\godwars_Data

Next, download UnityEX from HERE[www.dropbox.com].

In UnityEX, click "Open archive", navigate to \steamapps\common\GodWars\godwars_Data and open "resources.assets"
Click "Import files" and wait a minute (or five).
Once the progress bar is fully green, you can close UnityEX and enjoy your game with fancy controller glyphs!

If you ever want to uninstall the mod - you need to restore the original resources.assets file. The easiest way is to just delete the file and let Steam download it again.

For your convenience, here's a preview of the glyphs before you download and install the mod

Credit for the Xbox icons (which I slightly edited) goes to Arks[arks.itch.io].
Credit for UnityEX goes to DragonZH[forum.zoneofgames.ru]

I take full credit for modifying game assets and the content of this guide.

This is my first Unity mod. If you noticed that I missed a glyph somewhere - let me know in the comments!