It appears that your GPU does not meet the minimum requirements for Vermintide 2, which is resulting in the crashes you’re experiencing. The minimum requirements for Vermintide 2 are:
Requires a 64-bit processor and operating system
OS: 64-bit Windows 7, 64-bit Windows 8 (8.1) or 64-bit Windows 10
Unfortunately, your GPU ATI Radeon HD 3600 Series (DirectX 10.1, 1016MB) does not meet the minimum requirement. Apologies that I can’t provide another solution.