As far as DB jobs go I've found that ballsier works better. The first job I got was to kill the orphanage owner. I executed that by walking into her home, closing the door when just the two of us were in a room and hacking her to pieces. The kids at the orphanage were all yelling and cheering when they noticed her death, so I guess that's a job well done
No problems with guards or anyone else after leaving the house.