1. If your game crashes at startup: Update your video drivers!
NVidia: http://www.nvidia.co.uk/Download/index.aspx?lang=en-uk2. If your game crashes at startup: Try disabling Steam overlay
-Go to your Steam Library. Right-click on Door Kickers and choose "Properties".
-Uncheck the box next to "Enable the Steam Overlay while in-game" and click OK.3. If your game crashes at startup and you have an NVidia video card
Make sure the game starts on the NVidia GPU instead of the integrated GPU (usually Intel). You can do that from the NVidia Control Panel.4. Dubious game behavior: Verify Steam cache
If you see enemies going through walls, missing textures or other game bugs that couldn't have happened with such skilled people working on the game, verify the game's Steam cache files. Read this on how to do it: https://support.steampowered.com/kb_article.php?ref=2037-QEUH-3335
5. If your problem still persists, send an email at devteam (at) inthekillhouse (at)com with the file Documents\KillHouseGames\DoorKickers\log.txt and any .dmp files you can find there.Our game uses OpenGL, which is much worse than DirectX in regards to drivers. Therefore our game may not work even if your next-gen DirectX game runs fine.