I played with a gamepad, and my main issue was that the x axis is always inverted, what makes the demo unplayable for me. And yes, i noticed the "invert x axis" option in the settings, but it didn't seem to have an effect. How can this be fixed?

Something else: the settings have an option to disable twin stick, but i didn't notice any difference, though this might be due to my struggling with the x axis inversion.
Anyone can help me out?

This happened in the demo. Is this already fixed in the release version?

Would be great if the developers would check the gog forum as well because I'm not using steam or discord.

That's a pity. The developer doesn't reply to mails and obviously doesn't read the gog forums. I wanted to support the developers early, but without any possibility to get feedback from them, i guess I'll put it on my wishlist and check back some time later

The option was to enable twin stick. However, they ditched twin stick functionality. There was none in the demo and neihter is it in the full release. They said as much on the steam forums.

Which is why this game shouldn't be tagged a twin stick shooter, it simply isn't one.

Ah okay, thanks for the info! Did you try the release version with a gamepad? My main problem with the demo was that the x axis was inverted, no matter how i set the options. Did you experience the same issue?

No, I didn't get the game in the end.
My experience with the demo was too big a disappointment.