W, S, A, D and Left Click to fire.
Press 1 and 2 to switch weapons.
This game was made for the Indies VS PewDiePie jam. The downloadable is a slightly updated build with a lot of gameplay kinks smoothed out. It's a LOT more fun now (though the final baddie can't have his guns disarmed).
Here is the jam version: http://www.freelives.net/SuperWolfenstein/SuperWolfensteinHD_Jam.zip
Super Wolfenstein 3D is a loving reimagining of the classic Wolfenstein 3D game by ID Software, but with the big difference of it having realistic physics.
If the state of the art physics of the original game wasn't enough physics for you, then this is the reimagining of Wolfenstein 3D that you've been waiting for!
All the glitches! All the Nazis! All the physics!
Sweet video clip of the game in action: http://gfycat.com/MixedSpotlessBluefish