I like the gimmick. Though the browser-based option is a little wonky for me, as it doesn't cover the full screen, but the usual ctrl+scroll down option messes up the game, then I exit, but cannot return control as it used to be. I think the texts are also harder to read, because my viewing surface is not the intended size.
But back to the game. I like the shotgun gimmick. Little disorienting, because I've only shot with a double-barrel before (maybe a future update, eh?), but works great. Can't wait to try to operate it under stress.