Dead Island Side Quests Walkthrough: Too Much Sugar

You get this quest from Luke Craig in the Golden Bungalows district, near the area where Anne Snider is (Toy Story, Two Hearts quests) and Kim (Nectar of Life Continuous quest). This is your chance to get some XP for those quests, if you havent already.

To reach Craig, head towards the exclamation point on the minimap and fight through the zombies and enter his Bungalow. You will find him sitting on the bedroom door and begging you for help - he was bitten and does not have much time to live. He wants you to get the insulin to his brother, Danny, before it is too late for him too. Accept the quest and he will give you the Insulin to take to his brother.

Head down to the road and cross towards the Silver Bungalow district. Head down following the minimap directions, fighting (as usual) through some Zombies. The Bungalow in which Danny is will also be surrounded by some zombies trying to break in. Get rid of them, then find the door to the Bungalow, which you will have to break to enter.

Find Danny inside the Bungalow, and hand him the Insulin from his brother. He will give you some cash as the reward.

This completes the quest.