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.
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.