Check that u excluded the game folder from your antivirus ,so crack or game setup tools are not deleted.
I do that before strating game install,so it avoids any problems like that.
Once you're are the all the files nneeded are in game folde,try running as admin.
Or u can try updating the game tp version 1.09.
Here's a link,it's about 1.2gb in size,but it will fix a lot of game bugs and make it run better.
3DMGAME-Shadow.Warrior.v1.0.9.Update.and.Crack.Steam-3DM(includes all prev. updates)
https://mega.co.nz/#!RwpwwahA!OwLdhU-3X ... 8bf05pWw60
use "megadownloader app",if u have any problems downloading mega.co links.
or
http://pan.baidu.com/s/1DZOF1
Lastly before updating ,i say again ,exclude game folder from antivirus!
P.S...If game crashes after update,some people say to delete your saves and profile
Or to start from a chapter in the options.
P.P.S... some cracks are no good on winxp. (reloaded cracks i think)
p.p.s.. remember different cracks put the game saves in diff. locations.(sometimes in game folder)