1. Crash at startup: Update your video drivers!
NVidia: http://www.nvidia.co.uk/Download/index.aspx?lang=en-uk2. Still crashes at startup after updating drivers: 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. Crashes at startup and you have a Laptop with 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. Strange game behavior: Verify Steam cache / reinstall the game
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-33355. You changed the resolution to one that is larger than your screen and now you can't select Options again
-Go to Documents/KillHouseGames/DoorKickers
-Delete options.xml. Start the game.6. Game freezes, lag, sound glitches
Go to where the game is installed and rename OpenAL32.dll to OpenAL32.old. Now rename OpenAL32_haccel.dll to OpenAL32.dll
7. If your problem still persists, send an email at devteam (at) inthekillhouse(dot)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 the game may not work if you don't have the absolute latest drivers.