Whenever I play Prisoner, I always kill those unknowing players who think that they must go to the second floor to get the rocket launcher from the middle ledge. If you play anyone who is relatively competent, you will die more times than ti mes you actually get the rocket. The simple fact is that you can actually be on the ground floor of Prisoner, run under the rocket ledge (where the invisibility is), jump, and hold X. The rocket is easily attainable from underneath the pedestal as you'l l soon see. You'll clean up in Prisoner after knowing this.