If you want Spec Ops: The Line working with your Logitech Rumblepad2 or Dual Action Gamepad, you will have to follow...
Download :
xbox360cemu.v.3.0.rar
Extract the files :
dinput8.dll
xbox360cemu.ini
xinput1_3.dll
xinput9_1_0.dll
XInputTest.exe
and copy them into folder :
\Program Files (x86)\2K Games\Spec Ops The Line\Binaries\Win32\
If you cannot find the folder, search for SpecOpsTheLine.exe, and place the files in the same folder found.
Don't know much about this game, but I will give it a go, mostly because there is not much else out there at the moment.