Instead of carrying the millienium bomb around the level to to the store on the mountain and get a different back pack. Kill everything and clear a path to the prison. Then go back and get the bomb and just walk up to the prison, set the bomb and RUN!
Original Sea Reapers
To play with the original, uncensored version of the Sea Reapers, enter the "bin" folder in the game folder. Move the "arpfix.gzp" file to another folder. To restore the game to normal, simply move the file back to its original location.