I read the game supported Vulkan. Run it on Void Linux with AMD RX5600XT. I only see "OpenGL 4" and "OpenGL Reference" as options for video driver. Other games like Warthunder and Tomb Raider runs with Vulkan on my system. Is there real Vulkan support for VO on Linux?

Not yet. Maybe the devs will add later one.

That would be pretty cool. I played through The Talos Principle last year which used Vulkan and it runs like a dream on amdgpu/radv