Can't imagine Hitler, with Braun and party in tow, could possibly have made it out.
More important, what would be his motive? Hitler and his inner circle knew from 1944 if not 1943 that this was a fight to the death. Given what they had perpetrated with the Holocaust, capture would inevitably lead to an ignominious death. Maybe Bormann thought he could somehow cheat his fate, but Hitler knew he never could once Berlin had fallen.
Hitler seems to have been convinced that the last stand would use up the Red Army, buying some breathing space to regroup. Once Berlin was surrounded he sent at least one message, to a general in command against the western allies, to attack the surrounding Red Army so Berlin could be evacuated. The general ignored the order, which would have been futile, even suicidal.