Unfortunately the shaders the game uses apparently are not compatible with OpenGL 3 so I'm afraid there's not much you can do
Update: This guy made a modloader for the game with a mod that fixes this issue. It's not too complicated to install and there's even instructions on how to install the modloader here.
After doing that you can download the mod here, also make sure to edit the bat file to add "-cm" (without quotes) after "opengl3"