Endangered beer

Step One: Find the Delivery Man
From time to time Tek Abir will abandon his bar and go into his back room to water down his supply of beer. Follow him and talk to him while he is in the back room. He will ask you to help his next beer shipment to make it into town safely. Go to (-3, -13) and speak to Diver Birel.

Step Two: Protect the Shipment
As soon as you reply to Diver's request, you will enter a battle with a level 15 opponent named ??? who has 100 hp. This opponent uses a skill called Crimson Rise that seems to have a damage range of 20-30 and gives him back hp when used. ??? can use this skill twice per round. Diver will be on your side. This battle should be winable for any level 15 and up character, but others may be able to win it at level 10, depending on their build, class, and equipment. Defeat this strange character, win the "note" drop, and the quest will update.

Reward: 150 XP

Step Three: Deliver the Goods
Diver Birel will now follow you back to the inn. If you have had the aforesight to save your position at the Astrub Zaap, you can use a recall potion to make it back to the city quickly and easily. Return to (5, -17) and talk to Tak Abir again. He will thank you and ask you to stop the beer robberies forever.

Reward: 500 XP and 500 Kama