I managed to download the Esenthel Demo, unzip it, and configure it to use VS2012. Now I can compile and run the Tutorial demos, yay!

But I am wondering about 3 things, which are important for me and my game project:
1) Can I use Bullet on Windows? Can I set it to use deterministic mode?
2) Can I use OpenGL on Windows?
3) Can I use Code::Blocks+MinGW64 on Windows?

1) Esenthel is set up to use PhysX. If you wanted to use Bullet, you would miss out on a large feature set that Esenthel includes.
2) Esenthel will only use DirectX on Windows, but OpenGL on Anrdoid/Mac/IOS.
3) You can, but will probably take some extra work. It has not been tested, and there is no guarantee that everything will work as expected.