In order for you to play Xenonauts on Linux with minimal graphics settings, your computer must meet the following requirements
Operating System:
Any Linux distribution since 2010
Processor (CPU):
Intel 2 GHz
Memory (RAM):
1 GB RAM
Graphics Card:
Integrated Graphics
Hard Drive:
3 GB HD space
Sound:
Integrated
Monitor:
1280x720 pixels minimum
In order to play Xenonauts on Linux with maximum graphics settings, you need a computer with a configuration no worse than the following
Memory (RAM):
2 GB RAM
Graphics Card:
512 MB DirectX 9.0c Compliant Video Card
Hard Drive:
Solid State Hard Drive