I managed to get my hands on a copy of the indictment that was read out in court on March 7, which is linked below.
Indictment against Anders Behring Breivik 2012-03-07
There were about 325 people within range of the bomb blast in Oslo. Of those 8 were killed and 9 had serious injuries.
In the Utøya massacre a total of 246 bullet wounds were reported, of which 61 among survivors. Of those killed, 5 received 3 head shots, 18 received two head shots, and 33 received one head shot, for a total of 56 executions by means of a head shot (with neck shots being counted as head shots).
Seven people survived a single head shot, giving it an 83% fatality rate. In comparison, non head shots had a 34% fatality rate.
One person drowned, and one person fell and broke his neck.