Where is my Pineapple? - Dead Island
Bring Dr. Nguyen's scientific data from his Bungalow.
3000 XP, The Machete
Follow the trail and continue past the quarters where you acquired the tissue sample from Nick and John earlier. Continue down the broken stairway and kill all enemies below.
Once done, enter the dangling living quarters and kill the undead inside. Pick up the ID as well. Pick the laptop in the bedroom then return it to Nguyen to complete the quest.