The most common reason for why your game may not be working is due to an incompatible video card. How to Survive 2 requires a DirectX 11 compatible card, so if you are not sure, please check with your video card or chipset manufacturer (such as NVIDIA or AMD) to see if yours supports DirectX 11.
It is important to note that even if your operating system supports a higher version of DirectX, your video card may not.
Your version of Windows must also be 64-bit. How to Survive 2 will not run on 32-bit operating systems. You can view your operating system type by opening Control Panel > System and Security > System, and looking at your System type, which will display something similar to "64-bit Operating System, x64-based processor".
For easy reference, here is the Minimum and Recommended specifications for How to Survive 2:
Minimum:
OS: Windows 64-bit
Processor: Intel i3 3GHz
Memory: 4 GB RAM
Graphics: DirectX 11 compatible
DirectX: Version 11
Network: Broadband Internet connection
Hard Drive: 8 GB available space
Sound Card: DirectX 11 compatible
Recommended:
OS: Windows 7 or higher 64-bit
Processor: Intel i5 3 GHz
Memory: 8 GB RAM
Graphics: Geforce GTX 660 or Radeon R7 200 series - DirectX 11 compatible
DirectX: Version 11
Network: Broadband Internet connection
Hard Drive: 8 GB available space
Sound Card: DirectX 11 compatible card
If your system meets all of the Minimum Requirements and your game is still crashing, please ensure that all of your PC's components have the latest official drivers from your hardware manufacturer(s). If you are unsure as to how to do this, please feel free to contact us!
Finally, you can verify the integrity of your game cache by right-clicking on How to Survive 2 and selecting Properties > Local Files > Verify Integrity of Game Cache...