White Tiger (Just Cause 2)

So I'm going to base... (to get the object that the Colonel)
Kill all the soldiers but the Colonel
Come to the Colonel as close as possible... (as was shown in the passing game)
Shmalyat it with two hands with a gun (or whatever...ultrasound...)
And he (the beast) doesn't die and shoots me
And (maybe I imagined) I have during the gunfire stops working weapons (though ammunition is full and animation recharge no... sort of...)

WHAT TO DO? PLEASE HELP!!!