itch.io

If you're running on Linux, does your console window mention the words "segmentation fault" and "core dump"?

That segfault definitely happens within the Godot runtime itself. I've been running Strive 2 under the next Godot release (3.2.2) and I've found it quite stable -- so you might want to try it out. Unfortunately, if you do that, you'll need to fix some GDscript code that 3.2.2 made illegal (their bug https://github.com/godotengine/godot/issues/39861) :(.
Another technical option would be to get a debug build of Godot 3.2.1, make it crash again, and then investigate the core dump in your favourite debugger. (When I did that I found one impossible NULL pointer, and one infinite recursion; you might find something else.)
The one non-technical option I have for you is to just sit tight. The fixes for option 1 (runnable in Godot 3.2.2) will be included the next release, and it's possible that Mav will officially upgrade his Godot runtime too.

Thanks. I'll sit tight. 

(And itchio's version 63 is uploaded now -- let's see if it is as bad as that.)

Right now, the downloadable Linux build is still on 0.3.1 -- itch.io lists the file as version 62, uploaded August 31.