A couple of extra thoughts on this subject:
Hitler was pretty much a physical wreck by 1945. John Keegan’s book The Mask of Command gives a vivid portrait of his physical decay after Stalingrad and later after the 1944 attempt on his life, with one observer commenting that in six months he aged about ten years. He had Parkinson’s disease, he was under enormous stress, he was sleeping badly, and he was being given all kinds of bizarre medications by his quack doctor, Thedor Morrell. By the end of his life, he apparently couldn’t walk very far without having to stop to take a rest. So any escape option involving physical exertion (let alone combat) would have been hard to manage.
Folks interested in the concept of Hitler escaping from Berlin in April 1945 may want to read the following novels: The Trial of Adolf Hitler, by Philippe Van Rjndt, and The Berkut, by Joseph Heywood. In the first book, Hitler tries to commit suicide in the manner which he apparently did actually use (a combination of poison and a self-inflicted pistol wound) but he survives nonetheless (the author invokes as a parallel Rasputin’s initial survival of a multi-method assassination attempt) and decides that fate wants him to live after all – so he and and SS guard devise an on-the-spot escape plan. He ends up being discovered and tried before the United Nations many years later. In the second book, Hitler escapes as part of a carefully-arranged secret plan rather than an impromptu one and goes into hiding, with a crack team of Soviet security personnel hot on his trail under personal orders from Stalin to find him and bring him back alive – which they ultimately do.