It seems that you're using an outdated browser. Some things may not work as they should (or don't work at all).
We suggest you upgrade newer and better browser like: Chrome, Firefox, Internet Explorer or Opera

does anyone know how to unlock the secondary powers of Dog mode, the Excalibat and the Staff and all the others in the original game?
If I recall, you either hold down fire for longer, or there's an alt fire button. I can't recall which.