For those that get the black screen, or crash after intro load you can fix the problem as follows:

Locate the file: zombieshooter2.cfg in directory: C:\Program Files (x86)\Steam\steamapps\common\Zombie Shooter 2, or where ever you installed the game. You can find it easy by going to properties in your library -> open file location. Open the file with a text editor, and set the res to your nativie res ie.

DefaultScreenX=1920
DefaultScreenY=1080

Game will run fine. I've had to use this with many older games on Windows 10 that will not run if the res is lower than your native res.

Don't forget to go to Options and change the res!