1500 XP, Heavy Pistol
After completing the Sacred Silence quest, you'll be able to talk to Mugambe in the church to start the quest. Follow the mini-map to Mugambe's family in the abandoned house. After killing them, return to Mugambe to get your reward.
Banoi Herald Excerpt #23 - When you enter the abandoned house after you break down the door there is a bathroom to the left it's next to the toilet.