As already written in the Title, whenever I try to download Shadow Warrior Classic, the installation always get stuck at 91%

Any known issues? Any help?

Known issue: Galaxy.
Solution: Do not use Galaxy.

Same problem, different game:
https://www.gog.com/forum/medal_of_honor_series/downloading_to_91

Report the problem to GOG and it will hopefully be fixed one day.

Thanks a lot, I tried, but as it seems, there's no way to download directly from the gog website anymore? Or it's just very well hidden?

Haven't been around the website for quite some time to be honest, can you direct me towards a hint how I can download from their website as back in the good old days?

Ah nevermind, found it after quite some search, thanks anyways!

Okay, I tried but it doesn't help at all. Downloaded "Shadow Warrior Classic Complete" directly from the gog.com Website, which worked.

But when I double clicked the Install, it automatically forces GOG Galaxy open and then AGAIN tries to download the whole thing and AGAIN get's stuck at 91 % -_-

So, it seems like it really isn't possible anymore to download / install anything without Galaxy anymore now?!

Yes it is. They call them backup installers.

See pic!

Shut down Galaxy before installing using that.