To say the least...it was okay.
The movement is alright. I can see it being in a first-person shooter. But I'm not really so sure as to what's experimental about it (aside from the fact that you're experimenting with making an FPS game.)
Also, pressing Ctrl (for "crouch") and W (for "forward") in the web build at the same time triggers a common browser shortcut, Ctrl+W, that closes the current tab. You might want to look into that.