3000 XP, The Machete
After completing the Demonic Science quest, talk to Nguyen in the Laboratory to start this quest. You need to get his files from his bungalow. When you reach his bungalow, you'll see it's hanging off a cliff so you'll need to get in through the top and you can get out through a door right past the bathroom. Bring the laptop back to Nguyen for your reward and to start the Wet Job side quest.
ID Card #079 - Laying in the bathroom in the bungalow.
Detox Shotgun Mod - On a chair in the living room of the bungalow.