go to the GourdTower located on the right side of the tracks for this quest depending on class will determin you quest they are shown below

Seal Clubbers and Turtle Tamers, you'll have it the easist you need to collect Knob Goblin Firecrackers from the Cobb's Knob Outskirts.

Disco Bandits and Accordion Thiefs, you'll have it the middle of the 3 you need to collect spider webs from the Sleazy Back Alley.

Pastamancer and Sauceror, you'll need to collect razor-sharp can lids from the Haunted Pantry this can often take a while with razor-sharp can lids hardly coming up.

ollect 5 and return them to the Tower for a gourd potion. The gourd potion will give you a substantial boost to your primary stat. <eg seal clubber - mus.>

you can then repete this quest again but you now have to collect 6 and then again collect 7 and so on till 25 when he will say the GourdTower is finally safe.