In order to correctly diagnose your issue, we would like to ask you to send us a return message including the following files:
1) a list of all your environment variables (you can generate it by using the printenv command),
2) Dying Light's so-called crash.log files, which are created when launching the game. To find your Log files, go to your game's directory and then to .../DW/out/logs/ crash_??????_?????????.log
3) a report from a program called HardInfo.
You can download HardInfo by using the following line from the console: sudo apt-get install hardinfo