Dr. Healer's forgotten hideout

What's happened so far... after a virus broke out in Innsbruck, turning people into aggressive, zombie-like creatures, it quickly became known that the genius but insane Dr. Healer had created and hidden a cure in his lab in Leopoldstraße. A group of heroes recently set out to find and secure the substance before the zombies could get to it. They have succeeded and the first onslaught of zombies was also halted with it. But the quantity found is more than scarce and ever since numerous international researchers have been trying to reproduce the substance. All attempts have so far failed. The experts believe that Dr. Healer used an unknown ingredient to make the cure. In the mysterious lab, a key was found that supposedly grants access to Dr. Healer's forgotten hideout. It is believed to be located nearby. There, the experts also hope to find answers to the open questions of how and with which ingredients they can make the cure. Your task is to find Dr. Healer's forgotten hideout, search for the formula for the cure there and look out for the unknown ingredient. But be warned! Agents from a pharmaceutical company are also after the formula in order to take possession of it and profit from the zombie virus. We estimate they will be here in about 60 minutes. They will stop at nothing!