The EDIT 05/06/2015: it seems that the Demolisher my son was the victim of a false touch. Once the batteries removed, rubbed (just in case) and lifts it was restarted. Furthermore, in case of impromptu replacement, these four AA / LR06 batteries are more likely to be in the house of the four LR14 Rapidstrike. Mea Culpa and one more star for the Demolisher, who remains remarkable for its scope and precision. But only one, because I think it easily spend the unnecessary and overly cumbersome missile launcher, and I am booked on noise hairdryer Nerve engine, which excludes any sneak attack.
I maintain, however my review of Rapidstrike.