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Effect: All Perk-a-Cola machines have been cursed and now give out random Perk-a-Colas.
Head to the Skallen Market and behind 
Mule Kick, you can pick up a pot. Once obtained, place it on the fire
in the Blodheim Hall.
Only after this is done, you can pick up the second item which is located behind Loven's Antiquities, left of the zipline on a wooden barrel and it is a wooden cup. Interact with this item to pick it up, then place it into the pot in the Blodheim Hall.
Once you've placed that into the pot, you can head to the Storm Bridge to pick up the Chilly Chunks, and then head back to the Blodheim Hall and place the chunks into the pot. You can get another Chilly Chunks for the wonder weapon quest, by throwing an explosive at the back of the truck on the bridge.
The next part is obtained by killing a Necropincer with the Flammenfalle trap as the final blow. If done correctly, a Lobster will drop that you can interact with to pick up, and take back to the pot in the Blodheim Hall.
You'll now need to get to Round 40 or above and wait for a Special round. During the special round, you're going to need to fish at any of the fishing spots on the map to obtain a Red Fish, which you must pick up and place into the pot at the Blodheim Hall. If you don't have a Fishing Rod, you can find one at one of the four locations below:
Once you've placed all of these items into the pot, Mister Peeks will appear dancing, and you'll need to kill zombies with the Jotunn Star wonder weapon to send souls into Mister Peeks. Once enough souls have been collected, you'll hear Mister Peeks laugh and the relic trial portal will spawn in at the Dry Dock. This relic trial is: Zombies can only take melee damage.
The main thing to be careful of in this trial are the Toxic Zombies since they explode on death.