You can download Patch 2 Demo.
BTW, game is not good with cheaply spawning enemies and intense shaking/motion blur.
I completed it and I liked it. Reminds me of Zortch, which also use custom engine.
Can you add option to enable texture filtering?
It has already adjustable settings.
You can try run it with -DX11 launch parameter.
How did you managed TAB TAB menu to work in a standalone game?
Do you plan to release full game also on itch.io?
Do you plan to update this version too, not just Steam one?
Is this game made with GameGuru game engine?